Factorise
$x^{3}+8 x^{2}+9 x-18$
$(x-1)(x+3)(x+6)$
Show that :
$x+3$ is a factor of $69+11 x-x^{2}+x^{3}$.
Find $p(1), p(2)$ and $p(4)$ for each of the following polynomials
$p(y)=y^{2}-5 y+4$
Find the value of the polynomial $x^{2}-7 x+12$ at.
$x=-2$
The value of $249^{2}-248^{2}$ is
Evaluate
$(98)^{2}$
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