5+2(5x+ $2x^{2}$ )=13
-3(-a+6)+x(z+4)-2x
9*4 rectangle cut into 2 parts that can be put together to make a square
2-2=
2x(6-5x)=-7
9933160
04005
7063
8783892
11287
5746
414832777857724
$\frac{x^{2} -7x}{2}$ = 15
find area of circle if its radius is 7.90
{3x - 4y = 2
5x + 2y = 40
3^18 + 3^18 + 3^18
