zad.1
a) 3t
b) [tex](k+k^{3} ) : 2[/tex] lub [tex]\frac{k+k^{3} }{2}[/tex]
c) [tex]\frac{4}{5} n[/tex]
zad.2
a) x - a
b) 0,35n + n
c) [tex]n^{3} - m^{3}[/tex]
zad.3
a) [tex]-(-3) + 4 * 5 = 3+20 = 23[/tex]
b) [tex]4 * (-2)^{2} - 3(2*(-2) + 1) = 4*4 - 3 * (-3) = 16 + 9 = 25[/tex]
zad.4
B
zad.5
C
6 + y + 5 + 4 + x + 7 + x + 3 + 5 = 2y = 30 + 2x + 3y
zad.6
[tex]3x^{2} + 7y + 4x^{2} - 7y + 1 = 7x^{2} + 1[/tex]
