x=0
x = 0
2x = -7 - 8y
If -2x +14 = 0, -2x = -14, or x = 7.
-2x+16 = 0 -2x = -16 x = 8
Assuming that 4x2+2x = 0: 2x (2x+1) = 0 2x = 0 or 2x+1 = 0 x = 0 or -1/2
many solutions
y= -2x
2x + 2x + 146 + 26 = 172 4x + 172 = 172 4x = 0 x = 0
(2x + 3)(2x + 3)
2x+3-7=0 2x=4 x=2
X should be zeroas:X + 5 = 2X + 5so, 2X - X = 0 or X = 0