Factorise
$(x-2 y)^{3}+(2 y-3 z)^{3}+(3 z-x)^{3}$
$3(x-2 y) \cdot(2 y-3 z)(3 z-x)$
State whether each of the following statements is true or false
The degree of polynomial $5 x^{2}-7 x+2$ is $5 .$
$144 x^{2}-289 y^{2}$
If $49 x^{2}-b=\left(7 x+\frac{1}{2}\right)\left(7 x-\frac{1}{2}\right),$ then the value of $b$ is
Factorise :
$x^{3}+x^{2}-4 x-4$
Write the degree of the following polynomials
$11-2 y^{2}$
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