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1)3x²+6
2)-4,5x-1,5y
3)2½x-2½x²
4)9x+4,5y
5)jedna piata x +cztery piate y
2 Kolumna
a)-1,5(3x+y)
b)4,5(2x+y)
c)3(x²+2)
d)0,2(x+4y)
e)2½x (1-x)
1 c
2 a
3 e
4 b
5 d