value of 2x²+2x-1 if x=-1
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Answer:
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Step-by-step explanation:
2x²+2x-1 = f(x)
f(-1) = 2(-1)²+2(-1)-1 = 2-1-2 = -1
Answered by
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Answer:
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Step-by-step explanation:
2x²+2x-1
= 2(-1)²+2(-1)-1
=2(-2)+(-2)-1
= -4 - 2 - 1
= -7
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