September 2018 1 14 Report

Wykonaj działania, zredaguj wyrażenia podobne.

a) 7x+3y- 2xy+1-3x-3xy+2

b) (4x-7)-(10x+2)

c)3*(7x+2y)

d)(4a+3b)-9(-2a+3b); oblicz wartośc wyrażenia dla a=0,1 b=0,25


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