Question

Use the zero product to determine the zeros of y = (x + 4)(x - 10)(x - 7)

-4 10 7
-4,-10,-7
4, 10,7
4,-10,-7

Answer 1

x = - 4, x = 10, x = 7

Explanation:

To find the zeros let y = 0, that is

(x + 4)(x - 10)(x - 7) = 0

Equate each factor to zero and solve for x

x + 4 = 0 ⇒ x = - 4----------------

x - 10 = 0 ⇒ x = 10----------------

x - 7 = 0 ⇒ x = 7-------------------

Answer 2

x = - 4, x = 10, x = 7

Explanation:

To find the zeros let y = 0, that is

(x + 4)(x - 10)(x - 7) = 0

Equate each factor to zero and solve for x

x + 4 = 0 ⇒ x = - 4

x - 10 = 0 ⇒ x = 10

x - 7 = 0 ⇒ x = 7