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x² + 2x/3 + 1/9 - x² + 4 + 8/9 = x² + 10x + 25 - x² + 2x/3 - mnożymy każdy czynnik przez 9
9x² + 6x + 1 - 9x² + 36 + 8 = 9x² + 90x + 225 - 9x² + 6x
6x + 45 = 96x + 225
6x - 96x = 225 - 45
- 90x = 180
90x = - 180
x = -180/90 = - 2
odp
x = - 2
x² + 2x/3 + 1/9 - x² + 4 + 8/9 = x² + 10x + 25 - x² + 2x/3
9x² + 6x + 1 - 9x² + 36 + 8 = 9x² + 90x + 225 - 9x² + 6x
6x + 45 = 96x + 225
- 90x = 180
90x = - 180
x = - 2
x²+1/9-x²+4+8/9=x²+10x+25-x²+2/3x
x²-x²-x²+x²-10x-2/3x=-1/9-4-8/9-25
-10 2/3x=20
x=1 7/8