Find the value of the polynomial $x^{2}-7 x+12$ at.
$x=\frac{1}{2}$
$8 \frac{3}{4}$
If $x+y=-4,$ then what is the value of $x^{3}+y^{3}-12 x y+64 ?$
$\ldots \ldots$ is one of the zeros of $p(x)=x^{3}+7 x^{2}+11 x+5$
Factorise each of the following
$8 x^{3}+27 y^{3}+36 x^{2} y+54 x y^{2}$
Expand
$(3 a-4)^{2}$
The following expressions are polynomials? Justify your answer:
$\frac{1}{2 x}$
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