If $x^{2}-10 x+21=(x+m)(x+n)$ then $m+n=\ldots \ldots \ldots$
$10$
$7$
$21$
$-10$
Factorise each of the following
$64 x^{3}+125 y^{3}+240 x^{2} y+300 x y^{2}$
Is $x+1$ is a factor of $4 x^{3}+7 x^{2}-2 x-5$ or not ?
Classify the following as a constant, linear,quadratic and cubic polynomials:
$2+x$
Verify whether the following are True or False:
$-3$ is a zero of $y^{2}+y-6.$
By remainder Theorem find the remainder, when $p(x)$ is divided by $g(x),$ where
$p(x)=x^{3}-6 x^{2}+2 x-4, \quad g(x)=1-\frac{3}{2} x$
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