Question

Сократите дробь 64-b^2/b^2-16b+64 ПОМОГИТЕ!! Срочно надо .

Answer 1

$frac{64 - {b}^{2} }{ {b}^{2} - 16b + 64 } = frac{64 - {b}^{2} }{ {(b - 8)}^{2} } = frac{(8 - b)(8 + b)}{{(b - 8)}^{2} } = - frac{(b - 8)(8 + b)}{ {(b - 8)}^{2} } = - frac{8 + b}{b - 8}$