Rozwiąż równanie:
a) 4x²-(1-2x)²+2x=11
b) 2+(x-4)(x+4)=(x-1)²
4x² - 1 + 2x² + 2x = 11
6x² + 2x = 11 + 1
6x² + 2x = 12
2 + x² + 4x - 4x - 16 = x² - 1
x² - x² = - 1 + 14
0 = 13
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4x² - 1 + 2x² + 2x = 11
6x² + 2x = 11 + 1
6x² + 2x = 12
2 + x² + 4x - 4x - 16 = x² - 1
x² - x² = - 1 + 14
0 = 13