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$(2 a+3 b)^{2}$
$4 a^{2}+12 a b+9 b^{2}$
$(2 a+3 b)(2 a-5 b)$
Factorise the following quadratic polynomials by splitting the middle term
$12 x^{2}+23 x+5$
Verify whether $2$ and $5$ are zeros of the polynomial $x^{2}-2 x-15$ or not.
Write the degree of the following polynomials
$5$
Show that $p-1$ is a factor of $p^{10}-1$ and also of $p^{11}-1$
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