Math

posted by .

Could someone please explain this problem to me?
I will show you what I have so far.
Perform the indicated operations and simplify.
w-2/w-7-w+1/w+7+w-77/w^2-49
I made it to this step and now I can't figure out what to do next.
w^2+w-14/(w+7)(w-7) + w^2-6w-7/(w+7)(w-7) + w-77/(w+7)(w-7)=(w^2+w-14)+(w^2-6w-7)+(w-77)/(w+7)(w-7)= 4w-98/(w+7)(w-7).
This is where I'm lost at. I can't seem to figure out the end result.
Thanks for the help.

  • Math -

    Only after looking at your solution was I able to figure that your really meant....
    (w-2)/(w-7) - (w+1)/(w+7) + (w-77)/(w^2-49)

    = [(w^2 + 5w - 14) - (w^2 - 6w - 7) + w-77 ]/[(w+7)(w-7)]

    = (12w - 84)/[(w+7)(w-7)]
    = 12(w-7)/[(w+7)(w-7)]
    = 12/(w+7) , w ≠ 7 (or else we divided by zero)

  • Math -

    Thanks but I figured out where I made my mistake and got the answer.

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math- please help!

    Please help with these 5 problems! I have the solutions but I don't understand how to get them! 1. Perform the indicated operations and simplify: [(2/x)-1]/(x^2 -4) 2. Subtract and simplify: [12/(x^2 -4)] - [(3-x)/(x^2 + 2x)] 3. Perform …
  2. Geometry Question plz help

    Could someone please explain how to figure this out step by step. I'll give you one of my problems and I'll try to figure out the rest. Directions: For each situation find the value of x and the measure of the indicated segment. 1. …
  3. Math

    Could someone please help me with this problem. I have worked most of it out but now I'm not sure what to do. Multiply ans simplify. (x-9/4)(x+4/9) Here is what I have so far: x(x+4/9)-9/4(x+4/9)= x^2+4/9x-9/4x-9/4-4/9= x^2+4/9x-9/4x-1= …
  4. Math

    Can you please explain step by step on how to do each of these two problems below?
  5. Math

    Can you please explain step by step on how to do each of these two problems below?
  6. Math 141

    I am having trouble with this problem. perform the indicated operations and simpily the result as much as possible a) (3x - 2) (x^2 + 2x - 4 ) the answer i got so far is 3x^3 + 4x^2 -16x + 8. Am i done or i have to conitnue to simplify?
  7. chemistry

    This question I really don't get it. I tried tried tried to figure out how to start solve the problem but still couldn't figure out. So can you help me with one question PLEASE?
  8. 7th grade math - can't figure this out!

    A certain computer can perform 10^5 calculations per second. How many calculations can it perform in 10 seconds?
  9. college algebra

    1. divide and simplify x^2+x-56/x^1-1 / x-7/2x+2 2. find the product in simplest from for x^2+x-6/2x^2-x-3 * x^7-2x^6+4x^5/x^4+8x 3. perform the indicated operations and simplify: 2/3x +4/3x^2 y^4 -6/2x^4 y^5 4. perform the indicated …
  10. Math Pre-Algebra

    Simplify the Expression(-8/15)+(1/15). Show how to simplify in steps, using a property of operations for each step. Explain the property you use in each step. Can you help me please?

More Similar Questions