Question

find the value of a. if 6x²-3x+a=-8,for x =4
answer should be -92
answer it in step by step.
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Answer 1

6(4)^2 - 3(4) + a = -8
6x16 -12 + a= -8
216 - 12 + a =-8
204 + a =-8
a = -8-204 = -212