If the remainder of the division of x³+2x²+Kx+3 by x-3 is 21. Find the quotient and the value of K
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p(X)=x^3+2x^2+kx+3
x-3=0
X=3
p(3)=3^3+2×3^2+k×3+3
=27+18+3k+3
=3k+48
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