Question

Si m^2 + n^2= 5 y mn = 10, calcule m + n.

Answer 1

Respuesta:

5

Explicación paso a paso:

(m+n)^2= m^2+2(m.n)+n^2

(m+n)^2=(m^2+n^2)+2(10)

(m+n)^2=5+20

(m+n)^2=25

(m+n)=√25

(m+n)=5