If f ( x ) = 2x³- 7x²+ 4, then f (-2) = ?
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Answered by
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f(-2) = 2(-2^3)-7(-2^2)+4
=2(-8)-7(4)+4
=(-16)-28+4
=(-42)+4
= (-38)
=2(-8)-7(4)+4
=(-16)-28+4
=(-42)+4
= (-38)
Answered by
0
f(-2)= 2×(-2)^3-7(-2)^2+4
= -16-24+4
= -36
= -16-24+4
= -36
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