Question

22) Expand
(5x+3y-4²)² by
formuld
using​

Answer 1

Answer:

$(5x + 3y - {4}^{2} ) ^{2} \\ \\ (5x + 3y - 16) ^{2} \\ \\ 25 {x}^{2} + 9 {y}^{2} + 256 + 30xy - 96y - 160x$

Answer 2

Answer:

$= > {(5x + 3y - 4)}^{2} \\ = > {(5x)}^{2} + {(3y)}^{2} + {( - 4)}^{2} + 2(15xy - 12y - 20x) \\ = > 25 {x}^{2} + 9 {y}^{2} + 16 + 30xy - 24y - 40x$