Question

What are the x-intercepts of the function f(x) = 2x^2 - 3x + 20?​

Answer 1

There are two: -4 and -5/2
Steps

0 = (2x - 5)(x + 4) | FOIL (distribution)

2x = 5 | zero product rule
x = 5/2 <<<

x = -4 <<< | zero product rule again.

Answer 2

There are two: -4 and -5/2

Steps

0 = (2x - 5)(x + 4) | FOIL (distribution)

2x = 5 | zero product rule

x = 5/2 <<<

x = -4 <<< | zero product rule again.