Question

Помогите пожалуйста

Answer 1

(2x+5)^2=4x^2+10x+25

(6x-7y)(6x+7y)=6x^2-7y^2

(3a-8)^2=9a^2-24a+64

Answer 2

$1)(2x + 5) = 4x {}^{2} + 10x + 25 \\ 2)(6x - 7y)(6x + 7y) = 36 x{}^{2} - 49y {}^{2} \\ 3)(3a - 8) ^{2} = 9a {}^{2} - 24a + 64$