cuddlesxwheretho
cuddlesxwheretho cuddlesxwheretho
  • 24-04-2020
  • Mathematics
contestada

How to add/subtract with polynomial denominators?
He gave us the answer but I don’t know how to solve
:\

How to addsubtract with polynomial denominators He gave us the answer but I dont know how to solve class=

Respuesta :

valleybritney
valleybritney valleybritney
  • 24-04-2020

Answer:

Step-by-step explanation:

  • Cross multiply the numerators by the denominators.

[tex]\frac{5n}{n-2} -\frac{5}{n-1} =\frac{5n(n-1)-5(n-2)}{(n-2)(n-1)}[/tex]

  • Foil out the numerator:

[tex]\frac{5n}{n-2} -\frac{5}{n-1} =\frac{5n(n-1)-5(n-2)}{(n-2)(n-1)}=\frac{5n^{2}-5n-5n+10 }{(n-2)(n-1)}[/tex]

  • Simplify!

Answer Link

Otras preguntas

What is 36 percent as a decimal?
What is 36 percent as a decimal?
Pyrenees mountains border Spain and this European country starts with F
Which statement illustrates the distributive property? Please help
Which statement illustrates the distributive property? Please help
What is the difference between preterite and imperfect and the past progressive and present progressive?
Which statement illustrates the distributive property? Please help
Which statement illustrates the distributive property? Please help
What is the difference between preterite and imperfect and the past progressive and present progressive?
Which statement illustrates the distributive property? Please help