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(1-2x)² - (1-2x)(x²+3) + 0
1-4x² - 1 + 2x * x² + 3 +0
2 - 4x² +2x to jest wynik
b.
(x-3)(2x+2)=(x-3)(x²-6)
x-3*2x+2=x-3*x²-6
x*2x-x*x²=-3-6+3-2
2x²=-8/:2
x²=-4
x=pierwiastek z 4
x=2
c.
x²(2x-3)(x+2)=x³-2x²
x²*2x²-3*x+2=x³-2x²
2x²-3x+2=x³-2x²
2x²-3x-x³+2x²=-2
wiem tyle xDee :)