Question

Si: m + n = 5 ; mn = 2
Hallar: “m^2 + n^2”

Answer 1

Respuesta:

21

Explicación paso a paso:

$(m+n)^{2} =5^{2} \\m^{2} +2mn+n^{2} =25\\ m^{2}+ n^{2} =21$