Question

What can be determined by looking at the factored form of the polynomial f(x) = (x + 7)(x - 2) ?

A
The graph of the polynomial has zeros at (0,-7) and (0,2)
В
The graph of the polynomial has zeros at (7,0) and (-2,0)
C
The graph of the polynomial has zeros at (-7,0) and (2,0)
D
The graph of the polynomial has zeros at (0,7) and (0,-2)

Answer 1

C . The graph of the polynomial has zeros at (-7,0) and (2,0)

Explanation:

f(x) = (x + 7)(x - 2)

Zero's obtained:

• (x+7)(x-2) = 0
• x+7 = 0 ⇒ x = -7
• x-2 = 0 ⇒ x = 2

Coordinates:

• (-7, 0) and (2, 0)

Correct answer choice is:

C . The graph of the polynomial has zeros at (-7,0) and (2,0)