Question 1

Factorise $5b\left ( 6x+y \right )-c\left ( y+6x \right )$ completely.

Accepted Answer

$\left ( 6x+y \right )\left ( 5b-c \right )$

Answer

$\left ( 6x+y \right )\left ( -5b+c \right )$

Answer

$\left ( 6x+y \right )+\left ( -5b+c \right )$

Answer

$\left ( 6x+y \right )+\left ( 5b-c \right )$

Question 2

Factorise $25b^{2}-20b+4$.

Accepted Answer

$\left ( 5b-2 \right )^{2}$

Answer

$\left ( 5b+2 \right )^{2}$

Answer

$\left ( 2-5b \right )^{2}$

Answer

$5b\left ( 5b-4 \right )+4$

Question 3

Simplify $\frac{4}{5}a^{2}bc^{3}	imes \frac{15}{16}ab^{2}$

Accepted Answer

$\frac{3a^{3}b^{3}c^{3}}{4}$

Answer

$\frac{3ac^{3}}{4b}$

Answer

$\frac{3a^{2}b^{2}c^{3}}{4}$

Answer

$\frac{3(abc)^{3}}{4}$

Question 4

Expand and simplify $4h\left ( -3h+k \right )-2h\left ( -5k+h \right )$.

Accepted Answer

$14h\left ( -h+k \right )$

Answer

$14h\left ( h-k \right )$

Answer

$\left ( -h+k \right )$

Answer

$-14h^{2}+14hk$

Question 5

Expand $\left ( k^{3}+4 \right )^{2}$.

Accepted Answer

$k^{6}+8k^{3}+16 $

Answer

$k^{6}+8k^{3}+8 $

Answer

$k^{5}+8k^{3}+16 $

Answer

$k^{5}+8k^{3}+8 $

Question 6

If $x^{2}-y^{2}= 6$ and $x-y= 2$, find the value of $\left ( x+y \right )^{2}$.

Accepted Answer

9

Answer

3

Answer

6

Answer

18

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