October 2018 2 10 Report

1.Zapisz wyrażenia nie używajac nawiasow :

a) 2a+(3a - 7)

b) x - (2x - 3)

c) 3x - (y - 2x)

d) -(3a +6) - 4

e) -(2x - 1) - (3x +1)

f) (4a - 7b) - (2a +3b)

g) (2p - r) + (2r - p)

h) (x +y) + (x - z) + (z -y)

2.Zapisz w najprostszej postaci :

a) (x - 2) - (2 - x)

b) (a +b) + (2a -b) - (a -2b)

c) (3x - y + 1) - (x + y) + (y - x)

d) -(2a^2 - 3ab) - (2b -3a^2) + ( -ab - b)

^ = do potęgi daję naj


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