What are the zeros of the function y = x2 + 10x - 171, and why?

A) The zeros are x = - 19 and x = 9 because in factored form, the function is y = (x - 19) (x + 9).

B) The zeros are x = - 19 and x = 9 because in factored form, the function is y = (x + 19) (x - 9).

C) The zeros are x = 19 and x = - 9 because in factored form, the function is y = (x - 19) (x + 9).

D) The zeros are x = 19 and x = - 9 because in factored form, the function is y = (x + 19) (x - 9).

Question

Mathematics

Marely Blanchard

25 December, 02:08

What are the zeros of the function y = x2 + 10x - 171, and why?

A) The zeros are x = - 19 and x = 9 because in factored form, the function is y = (x - 19) (x + 9).

B) The zeros are x = - 19 and x = 9 because in factored form, the function is y = (x + 19) (x - 9).

C) The zeros are x = 19 and x = - 9 because in factored form, the function is y = (x - 19) (x + 9).

D) The zeros are x = 19 and x = - 9 because in factored form, the function is y = (x + 19) (x - 9).

+4

Answers (2)

Know the Answer?

Jaron Chaney · Answer 1

Hello,

Answer B

y=x²+10x-171=x²-9x+19x-171=x (x-9) + 19 (x-9) = (x-9) (x+19)

Hayden Pearson · Answer 2

Y = x^2 + 10x - 171

y = (x - 9) (x + 19)

x - 9 = 0 x + 19 = 0

x = 9 x = - 19

Answer B covers all requirements ... the factored form is

y = (x + 19) (x - 9)

and the zeros are - 19 and 9