find the value of a. if5x²-2x+a=-7,for x = -1 and answer should be-14
answer it in step by step
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Answered by
0
Step-by-step explanation:
5(-1)^2 - 2(-1) + a = 7
5+2+a=7
7+a =7
a= 7-7
a=0
Answered by
0
Answer:
5x^2-2x+a=-7
=5(1)^2-2(-1)+a=-7
=5+2+a=-7
=7+a=-7
=14+a=0
a=-14(prove)
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