Question

Сократите дробь: $frac{m ^{2}-25 }{m ^{2}+10m+25 }$

Answer 1

$frac{m ^{2}-25 }{m ^{2}+10m+25 }=frac{(m-5)(m+5) }{(m+5)^2 }=frac{m-5}{m+5}$