If $(5 x-3)^{2}=25 x^{2}+k x+9,$ then find $k$
$-45$
$20$
$15$
$-30$
Determine the degree of each of the following polynomials:
$2 x-1$
Factorise
$x^{3}+8 x^{2}+9 x-18$
Factorise the following quadratic polynomials by splitting the middle term
$x^{2}+10 x+16$
Write whether the following statements are True or False. Justify your answer.
$\frac{6 \sqrt{x}+x^{\frac{3}{2}}}{\sqrt{x}}$ is a polynomial, $x \neq 0$
Factorise $: 4 x^{2}+4 x y-3 y^{2}$
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