Answers

The Brainliest Answer!
2015-09-16T20:34:41+05:30
(6m-n)(36m²+6mn+n² )+(3m+3n)²
=6m(36m²+6mn+n²)-n(36m²+6mn+n²)+(3m+3n)
=216m³+36m²n+6mn²-36nm²-6mn²-n³+27m³+27n³
=216m³-n³+27m³+27n³
2 3 2