3X²-(X+2)²+2X=0

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3X²-(X+2)²+2X=03X²-(X+2)²+2X=03X²-(X+2)²+2X=03x²-x²-4x-4+2x=

3X²-(X+2)²+2X=0
3X²-(X+2)²+2X=0

3X²-(X+2)²+2X=0
3x² - x² - 4x - 4 + 2x = 0
2x² - 2x - 4 = 0
x² - x - 2 = 0
(x+1)(x-2) = 0
x1=-1 ,x2=2