Question

Add up the answer first to see of these correct or incorrect, if incorrect explain why it is not equal.

1. -2x -2x =0
2. x+x=x to the power of 2

Answer 1

1) incorrect

2) incorrect

Explanation:

-2x-2x = 0 ?

-2x -2x = -4x

It will be 0 only if x = 0.

Not always true, so incorrect

x+x = x² ?

2x = x²

They will be equal if x = 0 or 2.

Not always true so incorrect