Question

(4x² - 9y)² ultilisando a formula

Answer 1

${(4 {x}^{2} - 9y)}^{2} \\ \\ {(4 {x}^{2} )}^{2} - 2(4 {x}^{2} )(9y) + {(9y) }^{2} \\ \\ 16 {x}^{4} - 72 {x}^{2} y + 81 {y}^{2}$