Question

Which of the following would best be solved using factoring by grouping?

Answer 1

option A

Explanation:

x² + 3x - 10 = 0

x² + 5x - 2x - 10 = 0

x(x + 5) -2(x + 5) = 0

(x + 5) (x - 2)

x = -5 x = 2