September 2018 2 78 Report

Oblicz:

a) -3xy²y·(-2)xy=

b)5ab√2·(-3)a²·√3=

c)4a-(5a-7)-(3a+12)=

d)2x(3x-4y+6)-5(2x-3xy+4x)=

e)(5a-7b)(4a²-9b)=


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