Răspunsuri

2014-05-01T13:59:17+03:00
Aduci la acelasi numitor
5(m-x)-5(m+x)=2(m²-x²)+10m
5m-5x-5m-5x=2m²-2x²+10m
-10x+2x²=2m²+10m

2(x²-m²)=10(m+x)
(x-m)(x+m)=5(m+x)/m+x
x-m=5