anonymous
  • anonymous
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
Algebra
katieb
  • katieb
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anonymous
  • anonymous
zepdrix
  • zepdrix
What is that 6 doing there in the first denominator? Was that a typo?
zepdrix
  • zepdrix
Ah there we go :)

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zepdrix
  • zepdrix
Lemme break down the first denominator a sec, maybe we can see what's going on.\[\Large\rm 50x^4y^3=25\cdot2 x^1 x^3y^1y^2=\color{orangered}{25xy^2}\cdot2x^3y\]
anonymous
  • anonymous
sorry my computer log me out
zepdrix
  • zepdrix
So I broke down the first denominator so that it contains the second denoinator (orange) and a little bit more.
zepdrix
  • 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.
anonymous
  • anonymous
so it 50x^4y^3
zepdrix
  • zepdrix
Mmmm ya sounds good! :)
anonymous
  • anonymous
okay thanks I have more I just need to make other silde
zepdrix
  • zepdrix
cool c:

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