January 2019 0 7 Report
Doprowadź wyrażenie do najprostszej postaci. Proszę z wytłumaczeniem c
o trzeba po kolei robić!
a) -7 (x- 3y+ 1/7z- 2) -3(y+x+z) -18y=
b) (3x-1) (3x+1) (2-x)=
c) (2a-5b)^2 (do kwadratu) - 25b^2=
d) (7+3b)^2=
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