x2 + y2 = (x + iy)(x - iy)
' i ' = sqrt(-1)
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X + y
Only when X or Y = 0 That is because (x + y) squared = x^2 + 2xy + y^2 x^2 + 2xy + y^2 = x^2 + y^2 when x or y = 0
(2, -2)
No, to be linear, both the power of x and y need to be 1. Since x is squared, the power of x is 2.
y=xsquared-4x+2