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

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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

7.9k points

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