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zad.1 uprosc wyrazenie

c)7(z^2-2)-4(z+3)(z-3)

d)10(a^2-15)-12(a-4)(a+4)

e)2(a-b)^2-2(a+b)^2+(a+b)(a-b)

zad.2 rozwiąz równania:

a)(x-1)^2-(x+4)^2=-2x+1

b)(x+5)^2-(x-3)^2=x+1

c)(x+1)^2+(x-3)(x+3)-2=2(x-1)^2


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