3n(3n+3)=3n(n+1)(n+2)
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Answer:
9n²+9n = (3n²+3n)(n+2)
9n²+9n = 3n³+ 3n² +6n²+6n
9n=3n³+6n
3n=3n³
n=n³
1=n²
n= +1,-1
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