Question

PLEASE SOLVE THIS ASAP

PLEASE ​

Answer 1

$1.{(3a + 2b)}^{3} \\ = {(3a)}^{3} + {(2b)}^{3} + 3( {3a}^{2} \times 2b) + 3(3a \times {2b}^{2} ) \\ = {27a}^{3} + {8b}^{3} + 3( {9a}^{2} b) + 3({4ab}^{2} ) \\ = {27a}^{3} + {8b}^{3} + {27a}^{2} b + {12ab}^{2}$

$2. \: ({5x - 3y)}^{3} \\ = {(5x)}^{3} - ( {3y)}^{3} - 3( {5x}^{2} \times 3y) + 3( {5x \times 3y}^{2} ) \\ = {125x}^{3} - {27y}^{3} - 225 {x}^{2} y + 135 {xy}^{2}$