- Started with
\[\begin{cases} \frac{2 \cdot c}{\left(-b\right) - \sqrt{{b}^2 - \left(4 \cdot a\right) \cdot c}} & \text{when } b \ge 0 \\ \frac{\left(-b\right) + \sqrt{{b}^2 - \left(4 \cdot a\right) \cdot c}}{2 \cdot a} & \text{otherwise} \end{cases}\]
20.7
- Using strategy
rm 20.7
- Applied flip3-- to get
\[\begin{cases} \frac{2 \cdot c}{\left(-b\right) - \sqrt{\color{red}{{b}^2 - \left(4 \cdot a\right) \cdot c}}} & \text{when } b \ge 0 \\ \frac{\left(-b\right) + \sqrt{{b}^2 - \left(4 \cdot a\right) \cdot c}}{2 \cdot a} & \text{otherwise} \end{cases} \leadsto \begin{cases} \frac{2 \cdot c}{\left(-b\right) - \sqrt{\color{blue}{\frac{{\left({b}^2\right)}^{3} - {\left(\left(4 \cdot a\right) \cdot c\right)}^{3}}{{\left({b}^2\right)}^2 + \left({\left(\left(4 \cdot a\right) \cdot c\right)}^2 + {b}^2 \cdot \left(\left(4 \cdot a\right) \cdot c\right)\right)}}}} & \text{when } b \ge 0 \\ \frac{\left(-b\right) + \sqrt{{b}^2 - \left(4 \cdot a\right) \cdot c}}{2 \cdot a} & \text{otherwise} \end{cases}\]
20.7
- Applied sqrt-div to get
\[\begin{cases} \frac{2 \cdot c}{\left(-b\right) - \color{red}{\sqrt{\frac{{\left({b}^2\right)}^{3} - {\left(\left(4 \cdot a\right) \cdot c\right)}^{3}}{{\left({b}^2\right)}^2 + \left({\left(\left(4 \cdot a\right) \cdot c\right)}^2 + {b}^2 \cdot \left(\left(4 \cdot a\right) \cdot c\right)\right)}}}} & \text{when } b \ge 0 \\ \frac{\left(-b\right) + \sqrt{{b}^2 - \left(4 \cdot a\right) \cdot c}}{2 \cdot a} & \text{otherwise} \end{cases} \leadsto \begin{cases} \frac{2 \cdot c}{\left(-b\right) - \color{blue}{\frac{\sqrt{{\left({b}^2\right)}^{3} - {\left(\left(4 \cdot a\right) \cdot c\right)}^{3}}}{\sqrt{{\left({b}^2\right)}^2 + \left({\left(\left(4 \cdot a\right) \cdot c\right)}^2 + {b}^2 \cdot \left(\left(4 \cdot a\right) \cdot c\right)\right)}}}} & \text{when } b \ge 0 \\ \frac{\left(-b\right) + \sqrt{{b}^2 - \left(4 \cdot a\right) \cdot c}}{2 \cdot a} & \text{otherwise} \end{cases}\]
20.7
- Applied simplify to get
\[\begin{cases} \frac{2 \cdot c}{\left(-b\right) - \frac{\color{red}{\sqrt{{\left({b}^2\right)}^{3} - {\left(\left(4 \cdot a\right) \cdot c\right)}^{3}}}}{\sqrt{{\left({b}^2\right)}^2 + \left({\left(\left(4 \cdot a\right) \cdot c\right)}^2 + {b}^2 \cdot \left(\left(4 \cdot a\right) \cdot c\right)\right)}}} & \text{when } b \ge 0 \\ \frac{\left(-b\right) + \sqrt{{b}^2 - \left(4 \cdot a\right) \cdot c}}{2 \cdot a} & \text{otherwise} \end{cases} \leadsto \begin{cases} \frac{2 \cdot c}{\left(-b\right) - \frac{\color{blue}{\sqrt{{\left({b}^3\right)}^2 - {\left(a \cdot \left(c \cdot 4\right)\right)}^3}}}{\sqrt{{\left({b}^2\right)}^2 + \left({\left(\left(4 \cdot a\right) \cdot c\right)}^2 + {b}^2 \cdot \left(\left(4 \cdot a\right) \cdot c\right)\right)}}} & \text{when } b \ge 0 \\ \frac{\left(-b\right) + \sqrt{{b}^2 - \left(4 \cdot a\right) \cdot c}}{2 \cdot a} & \text{otherwise} \end{cases}\]
20.7
- Applied simplify to get
\[\begin{cases} \frac{2 \cdot c}{\left(-b\right) - \frac{\sqrt{{\left({b}^3\right)}^2 - {\left(a \cdot \left(c \cdot 4\right)\right)}^3}}{\color{red}{\sqrt{{\left({b}^2\right)}^2 + \left({\left(\left(4 \cdot a\right) \cdot c\right)}^2 + {b}^2 \cdot \left(\left(4 \cdot a\right) \cdot c\right)\right)}}}} & \text{when } b \ge 0 \\ \frac{\left(-b\right) + \sqrt{{b}^2 - \left(4 \cdot a\right) \cdot c}}{2 \cdot a} & \text{otherwise} \end{cases} \leadsto \begin{cases} \frac{2 \cdot c}{\left(-b\right) - \frac{\sqrt{{\left({b}^3\right)}^2 - {\left(a \cdot \left(c \cdot 4\right)\right)}^3}}{\color{blue}{\sqrt{(\left(a \cdot \left(c \cdot 4\right)\right) * \left((c * \left(a \cdot 4\right) + \left({b}^2\right))_*\right) + \left({b}^2 \cdot {b}^2\right))_*}}}} & \text{when } b \ge 0 \\ \frac{\left(-b\right) + \sqrt{{b}^2 - \left(4 \cdot a\right) \cdot c}}{2 \cdot a} & \text{otherwise} \end{cases}\]
20.7
- Applied taylor to get
\[\begin{cases} \frac{2 \cdot c}{\left(-b\right) - \frac{\sqrt{{\left({b}^3\right)}^2 - {\left(a \cdot \left(c \cdot 4\right)\right)}^3}}{\sqrt{(\left(a \cdot \left(c \cdot 4\right)\right) * \left((c * \left(a \cdot 4\right) + \left({b}^2\right))_*\right) + \left({b}^2 \cdot {b}^2\right))_*}}} & \text{when } b \ge 0 \\ \frac{\left(-b\right) + \sqrt{{b}^2 - \left(4 \cdot a\right) \cdot c}}{2 \cdot a} & \text{otherwise} \end{cases} \leadsto \begin{cases} \frac{2 \cdot c}{\left(-b\right) - \frac{\sqrt{{\left({b}^3\right)}^2 - {\left(a \cdot \left(c \cdot 4\right)\right)}^3}}{\sqrt{(\left(a \cdot \left(c \cdot 4\right)\right) * \left((c * \left(a \cdot 4\right) + \left({b}^2\right))_*\right) + \left({b}^2 \cdot {b}^2\right))_*}}} & \text{when } b \ge 0 \\ \frac{\left(-b\right) + \left(2 \cdot \frac{c \cdot a}{b} - b\right)}{2 \cdot a} & \text{otherwise} \end{cases}\]
5.8
- Taylor expanded around -inf to get
\[\begin{cases} \frac{2 \cdot c}{\left(-b\right) - \frac{\sqrt{{\left({b}^3\right)}^2 - {\left(a \cdot \left(c \cdot 4\right)\right)}^3}}{\sqrt{(\left(a \cdot \left(c \cdot 4\right)\right) * \left((c * \left(a \cdot 4\right) + \left({b}^2\right))_*\right) + \left({b}^2 \cdot {b}^2\right))_*}}} & \text{when } b \ge 0 \\ \frac{\left(-b\right) + \left(2 \cdot \frac{c \cdot a}{b} - b\right)}{2 \cdot a} & \text{otherwise} \end{cases} \leadsto \begin{cases} \frac{2 \cdot c}{\left(-b\right) - \frac{\sqrt{{\left({b}^3\right)}^2 - {\left(a \cdot \left(c \cdot 4\right)\right)}^3}}{\sqrt{(\left(a \cdot \left(c \cdot 4\right)\right) * \left((c * \left(a \cdot 4\right) + \left({b}^2\right))_*\right) + \left({b}^2 \cdot {b}^2\right))_*}}} & \text{when } b \ge 0 \\ \frac{\left(-b\right) + \left(2 \cdot \frac{c \cdot a}{b} - b\right)}{2 \cdot a} & \text{otherwise} \end{cases}\]
5.8
- Applied simplify to get
\[\begin{cases} \frac{2 \cdot c}{\left(-b\right) - \frac{\sqrt{{\left({b}^3\right)}^2 - {\left(a \cdot \left(c \cdot 4\right)\right)}^3}}{\sqrt{(\left(a \cdot \left(c \cdot 4\right)\right) * \left((c * \left(a \cdot 4\right) + \left({b}^2\right))_*\right) + \left({b}^2 \cdot {b}^2\right))_*}}} & \text{when } b \ge 0 \\ \frac{\left(-b\right) + \left(2 \cdot \frac{c \cdot a}{b} - b\right)}{2 \cdot a} & \text{otherwise} \end{cases} \leadsto \begin{cases} \frac{c \cdot 2}{\left(-b\right) - \frac{\sqrt{{b}^3 \cdot {b}^3 - {\left(\left(a \cdot c\right) \cdot 4\right)}^3}}{\sqrt{(\left(\left(a \cdot c\right) \cdot 4\right) * \left((c * \left(a \cdot 4\right) + \left({b}^2\right))_*\right) + \left({b}^2 \cdot {b}^2\right))_*}}} & \text{when } b \ge 0 \\ \frac{\frac{c \cdot 2}{\frac{b}{a}} - \left(b - \left(-b\right)\right)}{a \cdot 2} & \text{otherwise} \end{cases}\]
1.6
- Applied final simplification
- Applied simplify to get
\[\color{red}{\begin{cases} \frac{c \cdot 2}{\left(-b\right) - \frac{\sqrt{{b}^3 \cdot {b}^3 - {\left(\left(a \cdot c\right) \cdot 4\right)}^3}}{\sqrt{(\left(\left(a \cdot c\right) \cdot 4\right) * \left((c * \left(a \cdot 4\right) + \left({b}^2\right))_*\right) + \left({b}^2 \cdot {b}^2\right))_*}}} & \text{when } b \ge 0 \\ \frac{\frac{c \cdot 2}{\frac{b}{a}} - \left(b - \left(-b\right)\right)}{a \cdot 2} & \text{otherwise} \end{cases}} \leadsto \color{blue}{\begin{cases} \frac{2 \cdot c}{\left(-b\right) - \frac{\sqrt{{b}^3 \cdot {b}^3 - {\left(c \cdot \left(4 \cdot a\right)\right)}^3}}{\sqrt{(\left(c \cdot \left(4 \cdot a\right)\right) * \left((c * \left(4 \cdot a\right) + \left({b}^2\right))_*\right) + \left({b}^2 \cdot {b}^2\right))_*}}} & \text{when } b \ge 0 \\ 1 \cdot \frac{c}{b} - \frac{b - \left(-b\right)}{a \cdot 2} & \text{otherwise} \end{cases}}\]
0.3