What should be subtracted from $p(x)=x^{2}+9 x+20,$ so that the resulting polynomial is divisible by $x+2 ?$
$3$
$9$
$6$
$11$
By acute division, find the quotient and the remainder when the first polynomial is divided by the second polynomial: $x^{4}+1 ; x+1$
Factors of $x^{2}-23 x+120$ are………
Factorise
$144 x^{2}-289 y^{2}$
Expand:- $(x+3 y-5 z)^{2}$
Without actual division, prove that $2 x^{4}-5 x^{3}+2 x^{2}-x+2$ is divisible by $x^{2}-3 x+2$
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