Determine which of the following polynomials has $x-2$ a factor :
$3 x^{2}+6 x-24$
$4 x^{2}+ x-2$
Evaluate
$(98)^{2}$
The following expressions are polynomials? Justify your answer:
$\frac{(x-2)(x-4)}{x}$
Factorise :
$a^{3}-8 b^{3}-64 c^{3}-24 a b c$
Write the coefficient of $x^{2}$ in the following polynomials
$5-7 x-3 x^{2}$