Question

Помогите с алгеброй (

Answer 1

$\boxed{ \large\bigg(2 {x}^{5} - 7 {y}^{2} \bigg) \bigg(2 {x}^{5} + 7 {y}^{2} \bigg) = \boxed{ \underline{ \huge4 {x}^{10} - 49 {y}^{4}}}}; \\ \bf \sf \: pravilo : \bigg(a + b \bigg) \bigg(a - b \bigg) = {a}^{2} - {b}^{2} .$