August 2018 3 9 Report
Rozwiąż równania
a) 3x²+6=3x(x-2)
b) (x+2)(3+x)=x(x+1)+2
c) (3a-7)a+5=a²+2a(a-1)
d) -(x-3)(2x+1)=-2(6+x²)

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