Question

Упростите дробь m²+2mn+n²/ m-n, при m=5, n=-5

Answer 1

$\frac{{m }^{2} + 2mn + {n}^{2} }{n - m} \\ {(m + n)}^{2} \div m - n \\ {(5 - 5)}^{2} \div 5 - ( - 5) \\ {0}^{2} \div 5 + 5 \\ 0 \div 10 \\ 0$