Question
Multiply or divide as indicated. Simplify all answers.$$\frac{9 y}{y^{2}+4 y-21} \cdot \frac{y^{2}+y-12}{3 y+12}$$
Step 1
The given expression is: $$ \frac{9 y}{y^{2}+4 y-21} \cdot \frac{y^{2}+y-12}{3 y+12} $$ Factoring the quadratics, we get: $$ \frac{9 y}{(y+7)(y-3)} \cdot \frac{(y+4)(y-3)}{3(y+4)} $$ Show more…
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Key Concepts
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Prerequisites
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