Yes, 0, 2 is a solution to y=-x+2 because 0=-2+2 which can be rewritten as 2-2=0.
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If you mean: x2+5x+6 = 0 then the solutions are x = -3 and x = -2
(x-2)(x-4) = 0 x = 2 or x = 4
x2 - 6x + 8 = 0 x2 - 4x - 2x + 8 = 0 x*(x - 4) - 2*(x - 4) = 0 (x - 2)*(x - 4) = 0 so (x - 2) = 0 or (x - 4) = 0 ie x = 2 or x = 4
y = 0x = y + 2plug 0 in for yx = 0 + 2x = 2
2x2+5x-3 = 0 (2x-1)(x+3) = 0 x = 1/2 or x -3