Classify the following as a constant, linear,quadratic and cubic polynomials:
$\sqrt{2} x-1$
A polynomial of degree $1$ is called a linear polynomial.
$\sqrt{2} x-1$ is linear polynomial.
Expand
$(x+2 t)(x-5 t)$
If $p(x)=x+3,$ then $p(x)+p(-x)$ is equal to
$(3 x+5)^{2}$
Factorise
$16 x^{2}-40 x y+25 y^{2}$
$25 x^{2}+9 y^{2}+64+30 x y-48 y-80 x$