Question

Разложите:
$-64 + 25y {}^{2}$
$- 25 + 4m {}^{2}$
Заранее спасибо​

Answer 1

$- 64 + 25 {y}^{2} = 25 {y}^{2} - 64 = (5y - 8)(5y + 8)$

$- 25 + 4 {m}^{2} = 4 {m}^{2} - 25 = (2m - 5)(2m + 5)$