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Question

In each of the following, using the remainder Theorem, find the remainder when f(x) is divided by g(x) and verify the result y actual division.

f(x) = 2x46x3+2x2x+2, g(x) = x + 2

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Solution

f(x) = 2x46x3+2x2 -x + 2, g(x) = x + 2

x + 2 = 0 x = - 2

Remainder = f(-2) = 2(2)46(2)3+2(2)2 - (-2)+2

= 2× 16 - 6× (-8)+2× 4+2+2

= 32 + 48 + 8 + 2 + 2 + = 92

Remainder = 92


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