Question

Simplify x(x+1)−x(x−1)

Answer 1

2x

Explanation:

x(x+1) is x squared +x and -x(x-1) is -x squared +x, the x squareds cancel out and x+x is 2x

Answer 2

Answer: 2x

Explanation:

To simplify x(x+1)−x(x−1), first step is to open the bracket = x^2 + x - x^2 + x

Be mindful of the signs, + x^2 - x^2 = 0

=0 + 2x

= 2x