Count the number of term in the given expression.

$5xyz$

$7ab-3c+9$

Identify the terms, their coefficients, for each of the following expressions.

$7a{b}^{2}c-5cb$

Identify the terms, their coefficients, for each of the following expressions.

$x^2-3x+2$

Identify the terms, their coefficients, for the following expression.

Identify the terms, their coefficients, for each of the following expressions.

$\frac{3}{2}a-\frac{1}{5}b+ab$

On adding the following algebraic expressions $7x^2, -3x^2, \frac{11}{2}{x}^2, -5x^2,$ and $8x^2$ is $k{x}^2$, find the value of $k$

Add the following algebraic expressions.

$x+2y-3z, -3x+y+2z,$ and $2x-3y+z$