Write the degree of the following algebraic expressions:

$x^{2}y+2x{y}^2-5y^{2}x$

Write the degree of the following algebraic expressions:

$abc+a^{2}bc+a{b}^2{c}^3+2ac{b}^2$

If $x=1$ and $y=2$, find the value of the following algebraic expressions:

$x^{2}y$

If $x=1$ and $y=2$, find the value of the following algebraic expressions:

$x^2+y^2$

Evaluate each of the following algebraic expressions for $x=2, y=-3, z=-2, a=2, b=3$:

$2a^2+ab$

Evaluate each of the following algebraic expressions for $x=2, y=-3, z=-2, a=2, b=3$:

$2a^2+x^2-y^2$

Evaluate each of the following algebraic expressions for $x=2, y=-3, z=-2, a=2, b=3$:

$4x{y}^2-3y{z}^2+4x^{2}z$

Evaluate each of the following algebraic expressions for $x=2, y=-3, z=-2, a=2, b=3$:

$x^3+y^3+3xyz+ab$