Select all the equations where \( y=10 \) is a solution. Choose 2 answers: A \( y+11=22 \) B \( 8=18-y \) (c) \( 60=6 y \) (D) \( \frac{y}{5}=4 \) (E) \( 10 y=20 \)

\( \begin{array}{ll}7(y+3)-2(x+2)=14 & \text { Solve using subatitutio } \\ 4(y-2)+3(x+3)=2 & \text { methad }\end{array} \)

9. Show that (i) \( \binom{n+2}{2}-\binom{n}{2}=n+\frac{1}{2} \) Solution:

Find the factar of \( x^{5}+x^{4}-13 x^{3}-13 x^{2}+36 x+36 \) ai list three factars.

7. Show that the set F of the six complex valued functions: \( f_{1}(z)=z, f_{2}(z)=\frac{1}{1-z}, f_{3}(z)=\frac{z-1}{z} \) \( f_{4}(z)=\frac{1}{z}, f_{5}(z)=1-z, f_{6}(z)=\frac{z}{z-1} \) is a group under the usual multiplication of mappings.

\( 4(y+3)-2(x+2)=14 \quad \) Solve using subutitution \( 4(y-2)+3(x-3)=2 \quad \) methed