Write down the terms and factors of the following algebraic expression using the tree diagram.

$x^2+3xy-27$

Write down the terms and factors of the following algebraic expression using the tree diagram.

$3p^2-6p{q}^2+q^2+2$

Write down the terms and factors of the following algebraic expression using the tree diagram.

$2q-3p+4r$

Write down the terms and factors of the following algebraic expression using the tree diagram.

$8a^2{b}^{2}c$

Write down the terms and factors of the following algebraic expression using the tree diagram.

${\mathrm{ax}}^2+\mathrm{bx}+\mathrm{c}$

Identify the terms which contain $x$ and write down the coefficient of $x$.

$2x^{2}y-5x{y}^2+7y^2$

Identify the terms which contain $x$ and write down the coefficient of $x$.

$7y^2-3yx$

Identify the terms which contain $x$ and write down the coefficient of $x$.

$3+x+3x^{2}y$

Evaluate the following

$2a+b-3c, \mathrm{if} a=1, b=2, \mathrm{and} c=-1$