Which of the following are solutions to the equations below? x^2+x-20=0

Question

asked Jul 7, 2020 82.8k views

2 Answers

Dave · Answer 1 · 2020-07-13T18:28:52+0000

Answer:

x=4 x=-5

Explanation:

x^2+x-20=0

Factor

What 2 numbers multiply to -20 and add to 1

-4*5 =-20 and

-4+5 =1

(x-4) (x+5) =0

Using the zero product property

x-4 =0 x+5=0

x=4 x=-5