Find the remainder when $x^4+x^3-2x^2+x+1$ is divided by $x -1$.
$2$
$3$
$4$
$5$
Expand each of the following, using suitable identities : $(-2 x+3 y+2 z)^{2}$
Factorise : $\frac{25}{4} x^{2}-\frac{y^{2}}{9}$
Without actually calculating the cubes, find the value of each of the following : $(28)^{3}+(-15)^{3}+(-13)^{3}$
Find the zero of the polynomial : $p(x) = x + 5$
Verify whether the following are zeroes of the polynomial, indicated against them.
$p(x)=lx+m,\,\, x=-\,\frac{m}{l}$