Expand

$(2 x+3 y+5)^{2}$

Expand

$(3 a-4)^{2}$

Check whether the polynomial

$p(x)=x^{3}+9 x^{2}+26 x+24$ is a multiple of $x+2$ or not.

The factorisation of $4 x^{2}+8 x+3$ is

Factorise :

$a^{3}-8 b^{3}-64 c^{3}-24 a b c$

Write the coefficient of $x^{2}$ in the following polynomials

$\pi x^{2}-\frac{22}{7} x+3.14$