Question

find ihe value of a polynomial 7x^4+3x^2-4 when x=-2
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Answer 1

Step-by-step explanation:

solution :

p(x) = 7x*4 +3x*2-4

x = 2

p(2) = 7(2)*4 + 3(2)*2 -4

p(2) = 7(16) + 3(4) -4

p(2) = 112 + 12 - 4

p(2) = 124-4

p(2) = 120