Question

Select the correct answer. What are the zeros of this quadratic function? Rx) = (x - 7)(x + 8) A. x = 0 and x = 7 B. x= 0 and x = -8 C. x= 7 and x = -8 D. x = -7 and x = 8​

Answer 1

C

Explanation:

x - 7 = 0, x is 7 and x + 8 =0, x is -8

Answer 2

• C. x= 7 and x = -8

Explanation:

Given function

• R(x) = (x - 7)(x + 8)

Zero's of the function

• R(x) = 0
• (x - 7)(x + 8) = 0

1. x - 7 = 0 ⇒ x = 7
2. x + 8 = 0 ⇒ x = -8

Correct choice is C.