Question #7c4ba

1 Answer
salamat
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

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