book Maths Puzzle Numerical Ability

I can not for the life of me remember how to do this. I have tried numerous ways and still have not come to the correct answer.

2x to the 4-3x to the 3+x+1 is divided by 2x to the 2+x+1

Read Solution (Total 0)

book Other Question

Can someone please explain how to solve quadratic inequalitities using sign charts. I has me a little confused and I have about 30 problems to do. Here is an example of one.

solve (x-5)(x+2)>0 using a sign chart.

Thanks Caroline
I need to simplify this:

10X+4+X-9