January 2019 1 25 Report
Wykonaj działania i doprowadź wyrażenia do najprostszej postaci.

a) (2x+y)(x-3y)-x^2
b) 4x-(4x+y)(1-2y)
c) (3x+2y+1)(2x-y)
d) (x-y)(2x+3y)+(x+2y)(-x+5y)
e) -(x+5)(2x+y-3)+(4x-2y)(x-y+3)-2(x^2 -y)
f) (3x+y)(x-5y)-x(x+4y-1)-2x(x-9y)


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