# Lesson 04: Evaluating Algebraic Expressions (Substitution)

https://www.youtube.com/watch?v=ODXWMglNUYg

Lesson on evaluating algebraic expressions using substitution property
and the orders of operations. Evaluating algebraic expressions are vital
in understanding and solving for higher mathematical equations.

1:53 2x -- 3xy + 4y when x =3 and y = -5

3:50 x^2 -- 4xy + 3y^2 when x =2 and y = -1

Lesson module on evaluating algebraic expressions: http://www.numberbender.com/lesson/mo...

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