Question

Which expression Is equivalent to x2-17x-60

Need work attached.

Answer 1

(x+3)(x-20)

Explanation:

x^2+3x-20x-60

x(x+3)-20(x+3)

= (x+3)(x-20)

Answer 2

Explanation:

Find the roots of x² - 17x - 60

Quadratic formula

x = [17 ± √(17² – 4·1(-60))] / [2·1]

 = [17 ± √529] / 2

 = [17 ± 23] /2

 = -3, 20

x² - 17x - 60 = (x+3)(x-20)