What are the ways to find the LCD, of these following two rational expressions? 4 (numerator) over 5y2 + 29y - 42 (denominator) and 3y (numerator) over  5y2 + 24 -36 (denominator).

Elementary Algebra
17th Edition
ISBN:9780998625713
Author:Lynn Marecek, MaryAnne Anthony-Smith
Publisher:Lynn Marecek, MaryAnne Anthony-Smith
Chapter8: Rational Expressions And Equations
Section8.4: Add And Subtract Rational Expressions With Unlike Denominators
Problem 8.77TI: Rewrite as equivalent rational expressions with denominator (x+3)(x4)(x+4) : 2x2x12 , 1x216 .
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What are the ways to find the LCD, of these following two rational expressions?

4 (numerator)

over

5y2 + 29y - 42 (denominator)

and

3y (numerator)

over 

5y2 + 24 -36 (denominator).

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