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zad.4str 151

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

d) -(2ado potedi 2-3ab)-(2b-3ado potegi 2)+(-ab-b)

zad.24str 161

a)a+(a+b)

b)2x-(x+4)

c)7-(-x+6)

d)-(x+4)+(x-5)

e)1-(t+p)-(t-2)

f)-(-y+2)+(-2y-4)

zad.25str 161

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

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

c) -(kx+ny)-(3kx+2ny)+(5kx-3ny)

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

e) (4xdo potengi 2-3x)-(x+0,1xdo potengi 2)-(x do potegi 2-0,1x)


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