d)36x³y³z³-27x⁴y²z³-63x³y³z³=
(36x³y³z³-63x³y³z³)-27x⁴y²z³=
-27x³y³z³-27x⁴y²z³
[tex]e) {72x}^{2} - {14x}^{4} + {36x}^{3} - {54x}^{5} = \\ \\ {2x}^{2}( \frac{ {72x}^{2} }{ {2x}^{2} } + \frac{ { - 14x}^{4} }{ {2x}^{2} } + \frac{ {36x}^{3} }{ {2x}^{2} } + \frac{ { - 54x}^{5} }{ {2x}^{2} }) = \\ \\ {2x}^{2}(36 - {7x}^{2} + 18x - {27x}^{3}) [/tex]
