Question

X2+x=56 plantea y procedimiento

Answer 1

X2+x-56=0

-b+-(raiz)b2-4ac/2a
-1+-(raiz)1-4•1•(-56)/2•1
-1+-(raiz)1+224/2
-1+-(raiz)225/2
-1+-15/2

X1=-1+15/2
X1=14/2
X1=7

X2=-1-15/2
X2=-16/2
X2=-8