October 2018 2 21 Report

prosze o szybka pomoc

a)3x(x-2)+5=3+x(2+3x)

b)2y+5y(2-y)=3-5y²

c)2(x-2)²+5(7x-3)=2(x-1)(x=1)-17

d)3z(z+3)+(z-2)(z+1)=(2z+5)²-3


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