# Algebra Examples

Replace all occurrences of with a single . A plus sign followed by a minus sign has the same mathematical meaning as a single minus sign because

Factor out of .

Factor out of .

Cancel the common factor.

Rewrite the expression.

Replace all occurrences of with a single . A plus sign followed by a minus sign has the same mathematical meaning as a single minus sign because

Factor out of .

Factor out of .

Cancel the common factor.

Rewrite the expression.

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