Odpowiedź:
Zad 1.
a) 6x+(3x-5)= 9x - 5
b) 4a-(6-7a)= 11a - 6
c) (5m+8)-m= 4m+8
d) (2p-4)-(5+9p)= -7p - 9
e) -(5a-3b)+(8b-a)= -6a + 11b
f) -(2[tex]x^{2}[/tex]-6xy)-(5y-4[tex]x^{2}[/tex])+(-xy-2y)= 2[tex]x^{2}[/tex]+5xy - 7y
Zad 2.
a) 7(4-2y)= 28 - 14y = -14y + 28
b) -6(2x+1)= -12x - 6
c) m(4m+2n-1)= 4[tex]m^{2}[/tex] + 2mn - m
d) 2(6-3x)+4(x+1)= -2x + 16
e) 8(p-1)-2(2-3p)= 14p - 12
f) -3x(2,5-x)+2(1,5-x)= -9,5x + 3[tex]x^{2}[/tex] + 3 = 3[tex]x^{2}[/tex] - 9,5x + 3
