The use of grouping symbols (or brackets) in writing algebraic expression

Let's divide the first algebraic expression write the second algebraic expression in the folloiwng paris of algebraic number. -9xy^2, xy

Write the terms of the following algebraic expressions. 12-x-2y

Write the terms of the following algebraic expressions. 2p+qr-8

Write the terms of the following algebraic expressions. ac+b-2c

Write the following statements in the form of algebraic expressions. The sum of 31 and s.

Each symbol given below represents an algebraic expression: The symbols are then represented in the expression: Find the expression which is represented by the above symbols