The degree of polynomial $5 x^{2}-7 x-11$ is..........
$2$
$4$
$6$
$8$
Factorise :
$2 x^{3}-3 x^{2}-17 x+30$
Factorise each of the following
$64 x^{3}+125 y^{3}+240 x^{2} y+300 x y^{2}$
Give possible expressions for the length and breadth of a rectangle whose area is given as $\left(20 x^{2}+22 x+6\right)$ square units. $(x>0)$
Write the coefficients of $x^{2}$ in each of the following polynomials
$x^{3}+27$
Expand
$\left(x-\frac{1}{2}\right)^{2}$
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