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$(5 x-7 y-z)^{2}$
$25 x^{2}+49 y^{2}+z^{2}-70 x y+14 y z-10 z x$
Show that :
$2 x-3$ is a factor of $x+2 x^{3}-9 x^{2}+12$
$(5 x+3)(5 x-3)=\ldots \ldots . .$
The degree of polynomial $5 x^{2}-7 x-11$ is……….
By using the factor theorem, show that $(x-3)$ is a factor of the polynomial $12 x^{3}-31 x^{2}-18 x+9$ and then factorise $12 x^{3}-31 x^{2}-18 x+9$
With the help of the remainder theorem. find the remainder when the polynomial $x^{3}+7 x^{2}+17 x+25$ is divided by $x+4$
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