Question

Помогите пж умоляю
В закрепе самостоятельная

Answer 1

2)

$8x^3y^4 × (-5x^2y^5)^2 = 8x^3y^4 × 25x^4{y}^{10} = 200 {x}^{7} {y}^{14}$

3)

$100x - 9xy^2 = x(100 - 9y^2) = x(10 - 3y)(10 + 3y)$

$4a^2 + 20ab + 25b^2 =2^2a^2 + 2 \times 2 \times 5 \times ab \: + {5}^{2} {b}^{2} = (2a + 5b)^2$