Solve for x:
1. mc(x - a) + mL = ac(x - 2)
2.
3. 3x2 - 4x - 2 = 0
4.
x2/3 - x1/3 - 12 = 0
5. x2 - 3x - 4 > 0
6.
7. Find the distance between (2, 4) and (-4 , 5)
8.
Find the equation of the circle .
9.
Find the center and radius of the circle whose equation is x2
+ y2 - 10x - 4y = 7