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x-2x²=x²-4 Rozwiaz rownanie

Odpowiedź :

x - 2x² = x² - 4

x - 2x² - x² + 4 = 0

-3x² + x + 4 = 0

a = -3, b = 1, c = 4

Delta = 1² - 4 * (-3) * 4 = 1 + 48 = 49

pierw{Delta} = 7

x1 = (-1 - 7)/(-6) = -8/-6 = 4/3

x2 = (-1 + 7)/(-6) = 6/-6 = -1