SOLUTION: The question is to show a solution set {{{highlight_green(2/( 3 + x) + 4 / ( 2x + 2 ) = 10) }}} So I do this? {{{( 4x + 4 + 12 + 4x ) / ( 2x^2 + 8x + 6 ) = 10}}} {{{8x +

Algebra ->  Equations -> SOLUTION: The question is to show a solution set {{{highlight_green(2/( 3 + x) + 4 / ( 2x + 2 ) = 10) }}} So I do this? {{{( 4x + 4 + 12 + 4x ) / ( 2x^2 + 8x + 6 ) = 10}}} {{{8x +       Log On


   



Question 976116: The question is to show a solution set
highlight_green%282%2F%28+3+%2B+x%29+%2B+4+%2F+%28+2x+%2B+2+%29+=+10%29+
So I do this?
%28+4x+%2B+4+%2B+12+%2B+4x+%29+%2F+%28+2x%5E2+%2B+8x+%2B+6+%29+=+10
8x+%2B+16+=+20x%5E2+%2B+80x+%2B+60
0+=+20x%5E2+%2B+72x+%2B+60
0+=+5x%5E2+%2B+18x+%2B+15
Did I do this right? If so what do I do after this point, I don't really understand. If I did this completely wrong please feel free to show what I'm to do.

Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39616) About Me  (Show Source):
You can put this solution on YOUR website!
In general it looks good, but I have not worked through the steps carefully all the way.

Denominator on the left member is correct in first step.

Now looking at numerator
2%282x%2B2%29%2B4%28x%2B3%29
4x%2B4%2B4x%2B12
8x%2B16

revise equation
%288x%2B16%29%2F%282x%5E2%2B8x%2B6%29=10
8x%2B6=20x%5E2%2B80x%2B60, and now subtract 8x and 6 from both sides.
20x%5E2%2B72x%2B54=0, so you made a mistake.
reduce.
highlight%2810x%5E2%2B36x%2B27=0%29

Solution formula for a general quadratic equation will bring the solution for what is x.


===continuing===

Discriminant is 216.
Factorization of 216=2%2A108=2%2A2%2A54=2%2A2%2A2%2A27=2%2A2%2A2%2A3%2A3%2A3.
x=%28-36%2B-+6%2Asqrt%286%29%29%2F20
highlight%28x=%28-18%2B-+3%2Asqrt%286%29%29%2F10%29-----You can test to see if either of these individually will work in the original equation outlined in green.

Answer by MathTherapy(10551) About Me  (Show Source):
You can put this solution on YOUR website!
The question is to show a solution set
2%2F%28+3+%2B+x%29+%2B+4+%2F+%28+2x+%2B+2+%29+=+10+
So I do this?
%28+4x+%2B+4+%2B+12+%2B+4x+%29+%2F+%28+2x%5E2+%2B+8x+%2B+6+%29+=+10
8x+%2B+16+=+20x%5E2+%2B+80x+%2B+60
0+=+20x%5E2+%2B+72x+%2B+60
0+=+5x%5E2+%2B+18x+%2B+15
Did I do this right? If so what do I do after this point, I don't really understand. If I did this completely wrong please feel free to show what I'm to do.
Almost!!
You're right up to this point: 8x+%2B+16+=+20x%5E2+%2B+80x+%2B+60
After this, it should be: 0+=+20x%5E2+%2B+72x+%2B+44
Factoring out GCF, 4 should then give: 0+=+5x%5E2+%2B+18x+%2B+11
Now you can solve for x by using the quadratic equation or by completing the square. When complete,
you should get 2 negative roots/zeroes.
You made an error and the person who decided to help you (jos....) made an error too. Go figure!!
Good job in ALMOST determining the correct trinomial!!