b) (2-3x)do kwadratu- (1+2x)do kwadratu-3xdo kwadratu=2xdo kwadratu
d) y(2y) -1) =2(2+y)do kwadratu
e)(1/2x - 4)do kwadratu=(1/2x +4)do kwadratu
f)
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może jakaś treść do tego zadania ?! :/
b)![(2-3x)^{2}-(1+2x)^{2}-3x^{2}=2x^{2}\\ (4-8x+9x^{2})-(1+4x+4x^{2}) -3x^{2} =2x^{2}\\ 4-8x+9x^{2}-1-4x-4x^{2} -3x^{2} =2x^{2}\\ -8x+9x^{2}-4x-4x^{2} -3x^{2} -2x^{2}=-3\\ -12x=3/:(-12)\\ x=\frac{1}{4} (2-3x)^{2}-(1+2x)^{2}-3x^{2}=2x^{2}\\ (4-8x+9x^{2})-(1+4x+4x^{2}) -3x^{2} =2x^{2}\\ 4-8x+9x^{2}-1-4x-4x^{2} -3x^{2} =2x^{2}\\ -8x+9x^{2}-4x-4x^{2} -3x^{2} -2x^{2}=-3\\ -12x=3/:(-12)\\ x=\frac{1}{4}](https://tex.z-dn.net/?f=%282-3x%29%5E%7B2%7D-%281%2B2x%29%5E%7B2%7D-3x%5E%7B2%7D%3D2x%5E%7B2%7D%5C%5C+%284-8x%2B9x%5E%7B2%7D%29-%281%2B4x%2B4x%5E%7B2%7D%29+-3x%5E%7B2%7D+%3D2x%5E%7B2%7D%5C%5C+4-8x%2B9x%5E%7B2%7D-1-4x-4x%5E%7B2%7D+-3x%5E%7B2%7D+%3D2x%5E%7B2%7D%5C%5C+-8x%2B9x%5E%7B2%7D-4x-4x%5E%7B2%7D+-3x%5E%7B2%7D+-2x%5E%7B2%7D%3D-3%5C%5C+-12x%3D3%2F%3A%28-12%29%5C%5C+x%3D%5Cfrac%7B1%7D%7B4%7D)
d)![y(2y-1)=2(2+y)^{2} \\ 2y^{2}-y=2(4+4y+y^{2}) \\ 2y^{2}-y=8+8y+2y^{2} \\ 2y^{2}-y-8y-2y^{2}=8 \\ -9y^{2}=8 / : (-9) \\ y=\frac{8}{9} y(2y-1)=2(2+y)^{2} \\ 2y^{2}-y=2(4+4y+y^{2}) \\ 2y^{2}-y=8+8y+2y^{2} \\ 2y^{2}-y-8y-2y^{2}=8 \\ -9y^{2}=8 / : (-9) \\ y=\frac{8}{9}](https://tex.z-dn.net/?f=y%282y-1%29%3D2%282%2By%29%5E%7B2%7D+%5C%5C+2y%5E%7B2%7D-y%3D2%284%2B4y%2By%5E%7B2%7D%29+%5C%5C+2y%5E%7B2%7D-y%3D8%2B8y%2B2y%5E%7B2%7D+%5C%5C+2y%5E%7B2%7D-y-8y-2y%5E%7B2%7D%3D8+%5C%5C+-9y%5E%7B2%7D%3D8+%2F+%3A+%28-9%29+%5C%5C+y%3D%5Cfrac%7B8%7D%7B9%7D)