Explain the difference between evaluating an expression and solving an equation. Use examples to support your explanation.

Evaluating an expression

Unlike an equation, expression does not have an equal sign.

Example

(x² - 4²) / (x + 2)

So, by evaluating an expression it means to simplify the expression. Let's take a look at the example again

(x² - 4²)

= (x + 2) (x - 2) / (x + 2)

= (x - 2)

Solving an equation

Solving an equation involves finding an unknown value given in the equation. It contains an equal to sign (=) so, it result in a solution.

Example

(x² - 4²) / (x + 2) = 0

(x + 2) (x - 2) / (x + 2) = 0

(x - 2) = 0

x = 2