Leahalveraz333 Leahalveraz333
  • 26-02-2016
  • Mathematics
contestada

Adding and subtracting Rational equations!!!!! please help me ASAP ?!?!?!?!?!?!?!?!?!?!?!!?!?!?!??!!?!?Add. 2/9x^3+5/3x

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Willchemistry
Willchemistry Willchemistry
  • 26-02-2016
[tex] \frac{2}{9x^3} + \frac{5}{3x} [/tex]

Find the LCD . 

Factor each denominator  into its primes

9 = 3²

Find the least common denominator 3²x³ = 9 x³

Adjust fractions based  on the LCD:

[tex] \frac{2}{9x^3} + \frac{5*3x^2}{9x^3} [/tex]

Since the denominators are equal, combine the fractions :

[tex] \frac{2+3*5x^2}{9x^3} [/tex]

Simplify  2+3*5x²

multiply the numbers : 3 * 5 = 15

2  + 15 x²

[tex] = \frac{2+15x^2}{9x^3} [/tex]

hope this helps!



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