Question

125xcube +27ycube + 8zcube - 90xyz

Answer 1

Heya ✋

$125x ^{3} + 27y ^{3} + 8z ^{3} - 90xyz \\ \\ = (5x) ^{3} + (3y)^{3} + (2z) ^{3} - 3 \times 5x \times 3y \times 2z \\ \\ = (5x + 3y + 2z)((5x) ^{2} + (3y) ^{2} + (2z) ^{2} - 5x \times 3y - 3y \times 2z - 2z \times 5x) \\ \\ = (5x + 3y + 2z)(25x ^{2} + 9y ^{2} + 4z ^{2} - 15xy - 6yz - 10zx)$






Thanks :)))))