If both $x-2$ and $x-\frac{1}{2}$ are factors of $p x^{2}+5 x+r,$ show that $p=r$
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
$\sqrt{3} x^{2}+\pi x-9$
Classify the following as linear, quadratic or cubic polynomial
$35 x^{2}-16 x-12$
Evaluate the following products without multiplying directly
$93 \times 95$
If $\frac{x}{y}+\frac{y}{x}=-1(x, y \neq 0),$ the value of $x^{3}-y^{3}$ is