I tried doing these, but I always got the wrong answer or just got stuck on one part.

1.Resolve algebraically

$\displaystyle x^3+4x^2-7x-10<0$

I have absolutely no clue on how to start with this one.

2. $\displaystyle 4+squareroot(x-2)=x$

I squared both sides, but it kept getting more and more complicated and really confused me.

3.Determine the coordinates of the intersection points between the line $\displaystyle y=x+7$ and the circle $\displaystyle (x+2)^2+(y-3)^2=52$

I tried substituting the line into the circle equation, but than I didn't know where to go from there.

Thanks guys.