Factorise
$9 x^{2}-21 x y+10 y^{2}$
$(3 x-2 y)(3 x-5 y)$
Give possible expressions for the length and breadth of the rectangle whose area is given by $4 a^{2}+4 a-3$
Write the coefficient of $x^{2}$ in the following polynomials
$5-7 x-3 x^{2}$
Classify the following as a constant, linear quadratic and cubic polynomials:
$2-x^{2}+x^{3}$
Find $p(1), p(2)$ and $p(4)$ for each of the following polynomials
$p(t)=t^{2}-6 t+8$
…… is one of the factors of $p(x)=x^{3}-3 x^{2}+7 x-5$
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