Question

Помогите ПОЖАЛУЙСТА..
СОР

Answer 1

Объяснение:

1)

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

2)

${(5c - 3d)}^{2} - 9 {d}^{2} = (5c - 3d - 3d)(5c - 3d + 3d) = (5c - 6d)5c$