Proofing weird things 1

Step 1: x = y

        x^2 = xy

        x^2 - y^2 = xy - y^2

        (x - y)(x + y) = y(x - y)

Step 2:(x - y)(x + y)/(x - y) = y(x - y)/(x - y)

Step 3:x + y = y

Step 4:y + y = y

2y = y

2 = 1

Hence we proved 2 = 1

Which is the wrong step in the given solution?

×

Problem Loading...

Note Loading...

Set Loading...