Evaluate the following products without multiplying directly

$78 \times 84$

Find the zeroes of the polynomial in each of the following:

$h(y)=2 y$

State whether each of the following statements is true or false

$x^{2}-5 x+4$ is a linear polynomial.

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? $(x>0)$

Factorise

$12 x^{3}+17 x^{2}+3 x-2$