Post a question that is algebra II level, I need a question to work on

Hmmm...how about...

Solve for x.

ax² + bx + c = 0

You will need to "complete the square" to get the answer.

I think this is probably algebra II level, but I'm not sure.

Or maybe you've done this already...

It's a basic quadratic function.

step1:  ax²+bx+c = 0

It takes a while, but you eventually get to the quadratic formula, x=(-b ± sqrt(b²-4ac)/2a

Also, is there a plus/minus button? I just copied the symbol I used off Google.

Here's a system for you:

$-4x+y-2z=-14$

$8x-2y+4z=7$$2x-4y+z=3$