połącz w pary równe wyrażenia.
1.3x^2
2.-4,5x-1,5y
2 1/2x - 2 1/2 x^2
3.9x+4,5y
4.1/5x+4/5y
I.-1,5(3x+y)
II. 4,5(2x+y)
III.3(x^2+2)
IV. 0,2(x-4y)
V.2 1/2x(1-x)
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1 III
2 I
2 V
3 II
4 IV