5(x²-2x+3)-¼(20x²-8x+12) = 5x² - 10x +15 - 5x² + 2x - 3 = -8x -3
x = -1,25
-8*-1,25 -3 = 10,00 - 3 = 7
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5(x²-2x+3)-¼(20x²-8x+12) = 5x² - 10x +15 - 5x² + 2x - 3 = -8x -3
x = -1,25
-8*-1,25 -3 = 10,00 - 3 = 7