Question

determine as raizes das equações
a)x2-7x+6=0

b)x2+3x-28=0

Answer 1

a=x=6/5
-5x+6=0
-5x=-6
x=-6÷-5
×=6/5

b= x= 28/5
5x-28=0
5x=28
x=28÷5
x28/5