Find the value of the polynomial $5x -4x^2+ 3$ at $x = 2$.
$3$
$2$
$-3$
$-2$
Write the following cubes in expanded form : $(2 x+1)^{3}$
Evaluate using suitable identities : $(999)^{3}$
Find the remainder when $x^4+x^3-2x^2+x+1$ is divided by $x -1$.
Expand each of the following, using suitable identities : $(3 a-7 b-c)^{2}$
Check whether $7+3 x$ is a factor of $3 x^{3}+7 x$.