avaubinchae avaubinchae
  • 30-01-2017
  • Mathematics
contestada

3 over 3 x plus 1 over quantity x plus 4 equals 10 over 7x?

Respuesta :

Justtae16
Justtae16 Justtae16
  • 30-01-2017
1.Solve for x: 4 over x plus 4 over quantity x squared minus 9 equals 3 over quantity x minus 3. 

(4/x) + [4/(x^2 - 9)] = 3/(x - 3) 

LCD: x(x + 3)(x - 3) 

4(x + 3)(x - 3) + 4x = 3(x)(x + 3) 

4(x^2 - 9) + 4x = 3x^2 + 9x 

4x^2 - 36 + 4x = 3x^2 + 9x 
x^2 - 5x - 36 = 0 
(x - 9)(x + 4) = 0 
x = 9 or x = - 4 
Answer Link

Otras preguntas

Two angels are complementary. One angle is 18 degrees more than 2 times the other. Find the angles.
Select the letter of the choice that correctly identifies the following word or phrase: tort a. acronym b. malapropism c. idiom d. weasel word
Which which type of weather technology often carries cameras that can make images of Earth's surface, clouds, and snow cover? A: weather balloon B: weather sate
pls explain to me how to find the volume of a drop of water
How did the lives of the plebeians steadily change during the Roman Republic period?
What impact did isolation have on Spartan culture?
A twenty-six year-old man suffering from damage to his nervous system struggles with coordinating actions and making decisions. Which of the following diseases
Plant roots draw water from deep underground on the tundra. TrueFalse
Translate the phrase into a math expression. 12 less than twice a number A. 2 · (n – 12) B. 2 · n - 12 C. 2 · n ÷ 12 D. 12 – 2 · nI believe its D but im no
what is the farthest that manned space exploration has reached