if a remainder on division of X3+2x2+Kx+3byx-3is21 find the quotient and the value of k.
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x-3=0
x=3
f(x)=x³+2x²+Kx+3
f(x)=3³+2(3)²+3K+3
27+18+3K+3=21
48+3K=21
3K= -27
K= -9
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