For $p(x)=x^{3}+9 x^{2}+26 x+24$ $p(-2)=\ldots \ldots \ldots$
$120$
$0$
$60$
$-60$
Which of the following expressions is a polynomial, state the reason ? If an expression is polynomial, state whether it is a polynomial in one variable or not
$x^{2}+y^{2}+z^{2}+2 x y+2 y z+2 z x$
Factorise the following:
$4 x^{2}+20 x+25$
Factorise
$9 x^{2}+42 x+49$
Expand
$(x+4)(x+9)$
Expand the following:
$\left(\frac{1}{x}+\frac{y}{3}\right)^{3}$
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