## anonymous one year ago Unit 6 Rational Lesson 5 Like Denominators and Adding and subtracting rational Expression. Find the LCD of these fraction. 6 9 50x^4y^3 25xy^2 A. 25xy^2 B. 50xy^2 C. 25x^4y^3 D. 50x^4y^3 My answer: 25x^4y^3

1. anonymous

@zepdrix @Schen421

2. zepdrix

What is that 6 doing there in the first denominator? Was that a typo?

3. zepdrix

Ah there we go :)

4. zepdrix

Lemme break down the first denominator a sec, maybe we can see what's going on.$\Large\rm 50x^4y^3=25\cdot2 x^1 x^3y^1y^2=\color{orangered}{25xy^2}\cdot2x^3y$

5. anonymous

sorry my computer log me out

6. zepdrix

So I broke down the first denominator so that it contains the second denoinator (orange) and a little bit more.

7. zepdrix

To get your LCM, you would multiply the second fraction by 2x^3y. That would finish things up for you. So it looks like the LCM is just going to be that whole bottom left side since it contains the right denominator, and more.

8. anonymous

so it 50x^4y^3

9. zepdrix

Mmmm ya sounds good! :)

10. anonymous

okay thanks I have more I just need to make other silde

11. zepdrix

cool c: