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\[\left(x \cdot y + z \cdot t\right) + a \cdot b\]

\left(x \cdot y + z \cdot t\right) + a \cdot b

double code(double x, double y, double z, double t, double a, double b) {
	return (((x * y) + (z * t)) + (a * b));
}

Reproduce

herbie shell --seed 2020100 
(FPCore (x y z t a b)
  :name "Linear.V3:$cdot from linear-1.19.1.3, B"
  :precision binary64
  (+ (+ (* x y) (* z t)) (* a b)))