find the remainder when x cube + 3 X square + 3 X + 1 is divided by X + 1
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f(-1) = -1 + 3 • 1 + 3•(-1) + 1
= 2 +(-3) +1
= (3) + (-3)
= 0
hence remainder = 0
= 2 +(-3) +1
= (3) + (-3)
= 0
hence remainder = 0
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