Question

2x ao quadrado -100x =o

Answer 1

2.x.x -100=0 X(2x-100)=0 X=0 2x-100=0 2x=100 X=100\2 X=50

Answer 2

2x2-100x =0

X(2x-100)=0

Temos: x =0 e

               2x -100=0

                2x=100

                X=100/2 = 50