a)
[tex]4k - 8 = 4 * 2 - 8 = 8 - 8 = 0[/tex]
b)
[tex]\frac{2}{3b-2} = \frac{2}{3 * 3-2} = \frac{2}{9-2} = \frac{2}{7}[/tex]
c)
[tex]\frac{a^2 + 5a}{6} = \frac{3^2 + 5 * 3}{6} = \frac{9 + 15}{6} = \frac{24}{6} = 4[/tex]
d)
[tex]2x + x^2 = 2 * 4 + 4^2 = 8 + 16 = 24[/tex]
e)
[tex]p^2 - p^3 = 2^2 - p^3 = 4 - 8 = -4[/tex]
f)
[tex]3m - 1 = 3 * 4 - 1 = 12 - 1 = 11[/tex]
g)
[tex]\frac{2}{5}(y+3)^2 = \frac{2}{5}(7 + 3)^2 = \frac{2}{5} * 10^2 = \frac{2}{5} * \frac{100}{1} = 40[/tex]
h)
[tex]t(t+2) = 5* (5 + 2) = 5 * 7 = 35[/tex]
i)
[tex]\frac{3z^2 - 2z}{153} = \frac{0}{153}[/tex]
