## AriPotta Group Title Identify all of the following solutions of... one year ago one year ago

1. TimSmit

Try filling all of them in and seeing whether they satisfy the equation.

2. kirbykirby

You can do it algebraically, or you can plug in the numbers from the list.

3. TimSmit

Algebraically is better, but because you need to square the entire left side it might be cumbersome.

4. TimSmit

Correct, using 8 gives $\sqrt{0}+8 = 8$ and using 9: $\sqrt{1}+8 = 9$

5. AriPotta

alright, thanks :]

$\sqrt{x-8}=x-8 \implies x-8=(x-8)^2$ $(x-8)^2-(x-8)=(x-8)(x-8-1)=0$ 8 and 9