SOLUTION: Hi I have been trying to figure this out but it seems there are no examples in my book or anywhere. The equation is {{{1+1/x=56/x^2}}} also there is a factoring question that I t

Question 137516: Hi I have been trying to figure this out but it seems there are no examples in my book or anywhere. The equation is
also there is a factoring question that I think I did correctly but it doesn't seem right to me.
It says assume that the expressions given are the denominators of fractions find the LCD.
7a+14, a^2+2a
now I got all the way to 7(a+2) and a(a+2) now is the the LCD (a+2) but then what do I do with the 7 and a? Thanks so much
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
1) Solve for x:
Combine the terms on the left side.
Multiply both sides by
Cancel an x on the left side.
Perform the indicated multiplication on the left side.
Subtract 56 from both sides.
Factor this quadratic equation.

,
2) Find the LCD of:
and
You are to assume that these expressions are the denominators of fractions, so let's write them that way:
, Now we'll find the LCD. Factor the denominators, as you have done:
, Now you need to make a common denominator, so multiply the first one by a and the second one by 7.
, Now you can see that the LCD is:

RELATED QUESTIONS
14+2z=2(x-3y) 4(x-3y-z)=28 3(2x+y)+4z=-22 The answer supposedly is -3,-4,2 but I... (answered by rwm)

Hi can you please help me figure this problem. I am solving for x and y. the equation is... (answered by Alan3354,bucky)

Hi, i am having trouble finding the answer to this: The following equations have... (answered by jim_thompson5910)

HELLP!!!!!!!!!! How do you find the height of a similiar triangle???? I have not seen... (answered by stanbon)

Find the equation of the circle touching line x-2y=3 at (-1,-2) and having radius sqrt(5) (answered by Alan3354)

IN a shipment of 40 stoves, 2 are defective. What percentage is defective? This seems... (answered by Alan3354,macston)

I need help with the following question. My book does not have any examples or show any... (answered by ankor@dixie-net.com)

Hi, I am trying to help my nieces with their homework, but I don't have much information (answered by richwmiller,dabanfield)

Determine if sqrt 77 and sqrt(-)are irrational or rational. I said that 77 was... (answered by stanbon)