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b)6x-3y+9z=3(2x-y+3z)
c)8xy-6x²+2x=2x(4y-3x+1)
d)12x³-6x²-3x=3x(4x²-2x-1)
e)-21x(na górze 5 )+35x² =7x²(-3x³+5x)
B) 3(2x-y+3z)
C) 2(4xy-3x2+x)
D) 3(4x3-2x2-x)
E) 7(-3x5+5x2)
Na górze jest : A)2
C)2
D)3 i 2
E)5 i 2