find the lcm
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1 Answer

y²+18y+81=(y+9)², y²+y-72=(y+9)(y-8).

LCM is (y+9)²(y-8)=y³+18y²+81y-8y²-144y-648=y³+10y²-63y-648.

by Top Rated User (815k points)

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