January 2019 1 21 Report
Pomoże ktoś obliczyć? c;
a) (x-2y)^2 - (x-2y)(x+2y) - 4y(2y-1) + 2(y-1)^2
b) 2x - (x+1)(x-1)+2(2x+3)^2<7x^2 - 3x
c) x/2 > 12+ (x+2)/3
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