Question
In the following exercises, find the LCD.$$\frac{6}{a^{2}+14 a+45}, \frac{5 a}{a^{2}-81}$$
Step 1
The first denominator $a^{2}+14a+45$ can be factored as $(a+9)(a+5)$ and the second denominator $a^{2}-81$ can be factored as $(a+9)(a-9)$. Show more…
Show all steps
Your feedback will help us improve your experience
Luke P and 80 other educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
In the following exercises, find the LCD. $$ \frac{4}{b^{2}+6 b+9}, \frac{2 b}{b^{2}-2 b-15} $$
Rational Expressions and Equations
Add and Subtract Rational Expressions with Unlike Denominators
In the following exercises, find the LCD. $$ \frac{2}{3 d^{2}+14 d-5}, \frac{5 d}{3 d^{2}-19 d+6} $$
Find the LCD of $$\frac{2}{a^{3}+8}, \frac{a}{a^{2}-4}, \text { and } \frac{2 a+5}{a^{3}-8}$$
Adding and Subtracting with Like Denominators; Least Common Denominators
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD
