find the value of polynomial 6x-4x3+7 at x=2 and x=-2
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Answer:
p(x) = 6x-4x^3+7
Substituting the value of x = 2
p(2) = 6(2) - 4(2)^3 + 7
= 12 - 32 + 7 = - 13
Substituting the value of x = - 2
p(2) = 6(-2) - 4(-2)^3 + 7
= - 12 + 32 + 7 = 27
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