Question

Mrs. Inman place the following function on the board:

y=-x^2+7x-12

Sharla says that the zeros of this function are x = -4 and x = -3.

Lauren says that the zeros of this function are x = 4 and x = 3.

Who is correct: Sharla or Lauren? Explain your reasoning to receive full credit.

Answer 1

-x^2+7x-12=0. (*-1)
x^2-7x+12=0
(x-4)(x-3)=0
the zeroes are x = 4 and x = 3