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a)6x+0,6
b) 5x²-30-3+4x²
9x²-33
c) -y+6y+7
d) -x²+2x+81
e) 4k²+16k+16
f) x²-10x
zad2
a) 4x²+8x-12
4(x²+2x-3)
b) 3t²-6t²+8t
t(3t²-6t+8)
zad 5
a) x²+4x+x+4
x²+5x+4
b) (4x+6)(2x-1)
8x²-4x+12x-6
8x²+8x-6
c) -x²+3x-7x+21
-x²-4x+21
zad8
a) x(x-6)
b) 3(y²+3y-4]
c) 2t(t²-3t+2]
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