a) x - 2x^2 - 3 + 6x +2x^2 = 0
7x - 3 = 0
x = 3/7
b) x^2 - x + 4x - 4 = x^2 + 2x +9x -1
-8x = 3
x = -3/8
c) x^2 - x^2 + 9 = 9
0 = 0, nieskończenie wiele rozwiązań
d) x^2 -3x +2x -6 = x^2 + 4
-1x = 10
x = -10
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a) x - 2x^2 - 3 + 6x +2x^2 = 0
7x - 3 = 0
x = 3/7
b) x^2 - x + 4x - 4 = x^2 + 2x +9x -1
-8x = 3
x = -3/8
c) x^2 - x^2 + 9 = 9
0 = 0, nieskończenie wiele rozwiązań
d) x^2 -3x +2x -6 = x^2 + 4
-1x = 10
x = -10