### Theory:

On the Children day celebration, Madhu arranged seating for children.

Situation $$1$$: There are '$$x$$' unknown number of rows and '$$y$$' unknown number of columns. The number of chairs can be arranged will be expressed as the product of two variables.

That is $$x×y$$.

Thus, the number of chairs Madhu arranged for seating is $$x×y$$.

Situation $$2$$: Suppose there are '$$x$$' unknown number of rows and ${y}^{2}+2y$ number of columns. The number of chairs can be arranged will be expressed as the product of two polynomials.

That is $$x×$$(${y}^{2}+2y$).

Thus, the number of chairs Madhu arranged for seating is $$x×$$(${y}^{2}+2y$).

To get the final result of these type of situations, we need to learn to multiply two algebraic expressions.

Let us learn how to do multiplication using two algebraic expressions.
Important!
The product of two algebraic terms is represented by the symbol $$()$$, dot($$.$$), $$×$$.