What are the zeros of f(x) = x^2 + x - 20? A. x= -4 and x = 5 B. x= -2 and x = 10 C. x= -5 and x = 4 O D. x= -10 and x = 2

asked Sep 4, 2021 69.6k views

5 votes

What are the zeros of f(x) = x^2 + x - 20?

A. x= -4 and x = 5
B. x= -2 and x = 10
C. x= -5 and x = 4
O D. x= -10 and x = 2

by Kammi

4.3k points

Please log in or register to add a comment.

2 votes

x² + x - 20
= (x+5)(x-4)

x + 5 = 0
x = -5

x - 4 = 0
x = 4

hence the answer is C

Ben Greenman answered Sep 10, 2021

5.0k points

Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

5.2m questions

6.8m answers