Simplify (y^2-49)*9/(y-7)

Multiply and .
Simplify the numerator.
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Rewrite as .
Since both terms are perfect squares, factor using the difference of squares formula, where and .
Simplify terms.
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Cancel the common factor of .
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Cancel the common factor.
Divide by .
Apply the distributive property.
Simplify the expression.
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Move to the left of .
Multiply by .
Simplify (y^2-49)*9/(y-7)

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