October 2018 2 20 Report

Zapisz najprościej:

a) 2a(b-3)-2b(a-3)

b) a(a+b)+a(a-b)+b(b+a)

c) 5a(a-2)+2a (a+5)

d) 3(a+2b-3c) -2 (a-2a)+5(c-B)


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