Question

(2x + y)³ + (2x - y)²​

Answer 1

Step-by-step explanation:

${(2x + y)}^{3} + {(2x - y)}^{2}$

${(a + b)}^{3} = {a}^{3} + {b}^{3} + 3ab(a + b)$

${(a - b)}^{2} = {a}^{2} - 2ab + {b}^{2}$

$= ( {(2x)}^{3} + {y}^{3} + 3(2x)(y)(2x + y)) + ( {(2x)}^{2} - 2(2x)(y) + {y}^{2}$

$= 8 {x}^{3} + {y}^{3} + 6xy(2x + y) + 8 {x}^{2} - 4xy + {y}^{2}$

$= 8 {x}^{3} + {y}^{3} + 12 {x}^{2} y + 6x {y}^{2} + 8 {x}^{2} - 4xy + {y}^{2}$

Answer 2

Step-by-step explanation:

Refer to the attachment.........

Hope it helps u......