x2-10x+22=-2
x={4,6}
2x2-36=x
x={-4,9/2}
7x2+1=29
x={-2,2}
8x2+21=-59x
x={-7,-3/8}
8x2+4x-16=-x2
x={-2+-2sqrt(37)/9}
3(x+2)2-10=-235
x=-2+-5i sqrt(3)