Question #7c4ba

1 Answer
Jun 5, 2017

A. x -5

Explanation:

x^2 - 12 x + 35

we use by checking one by one of the answer/binomial given and equalize to zero then plug in to the trinomial. If we got the value is zero, than it is a correct answer

A. x -5 = 0, x =5
-> (5)^2 - 12 (5) + 35 = 25 -60 + 35 =0, therefore
A. x -5 is a correct answer.

B. x + 5 = 0, x = -5
-> (-5)^2 - 12 (-5) + 35 = 25 +60 + 35 != 0, therefore
B. x +5 is not a correct answer.

C. x^2 + 12 = 0, x^2 = -12 -> unableto solved, therefore
C. x^2 + 12 is not a correct answer.

D. x + 70 =0, x =-70
-> (70)^2 - 12 (70) + 35 = 4900 - 840 + 35 != 0, therefore
D. x + 70 is not a correct answer