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$(5 x-7 y-z)^{2}$
The following expressions are polynomials? Justify your answer:
$\frac{(x-2)(x-4)}{x}$
Evaluate the following products without multiplying directly
$88 \times 86$
What are the possible expressions for the dimensions of a cuboid whose volume is given as $\left(2 x^{3}+15 x^{2}+33 x+20\right)$ cubic units? $(x>0)$
What should be added to $p(x)=x^{2}-8 x+10$ so that the resulting polynomial is divisible by $x-3 ?$