Question

25 m ² + 20 m n + 4 n ² =​

Answer 1

Respuesta:

$25 m ^{2} + 20 m n + 4 n ^{2} =\\\\=\left(5m\right)^2+2\cdot \:5m\cdot \:2n+\left(2n\right)^2\\\mathrm{Aplicar\:la\:formula\:del\:binomio\:al\:cuadrado}:\quad \left(a+b\right)^2=a^2+2ab+b^2\\a=5m,\:b=2n\\\\Resultado=\left(5m+2n\right)^2$