Evaluate
$(215)^{2}$
Factorise $: x^{3}+x^{2}-26 x+24$
Classify the following as a constant, linear,quadratic and cubic polynomials:
$\sqrt{2} x-1$
Find the quotient and the remainder when $2 x^{2}-7 x-15$ is divided by
$x-2$
Which of the following expressions is a polynomial, state the reason ? If an expression is polynomial, state whether it is a polynomial in one variable or not
$\sqrt{3} x^{2}+\pi x-9$