If $x^{2}-8 x-20=(x+a)(x+b),$ then $a b=\ldots \ldots \ldots$
$-8$
$-20$
$8$
$20$
Write the degree of each of the following polynomials
$x^{8}-6561$
With the help of the remainder theorem, find the remainder when the polynomial $x^{3}+x^{2}-26 x+24$ is divided by each of the following divisors
$x-6$
Factorise :
$1+64 x^{3}$
If $p(x)=x^{2}-4 x+3$ then, find the value of $p(2)-p(-1)+p\left(\frac{1}{2}\right)$
Expand
$(x+3)(x+8)$
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