Thursday

July 31, 2014

July 31, 2014

Posted by **Shreya** on Saturday, January 7, 2012 at 12:51pm.

i be left with

30 = 3x^2-75-2x^2+50

i not sure what to do? i use the quadratic formula?

- math-calculus -
**Steve**, Saturday, January 7, 2012 at 3:38pmFirst, you have to simplify properly:

30/(x^2-25) = 3/(x-5) - 2/(x+5)

30 = 3(x+5) - 2(x-5)

You were ok multiplying through by x^2 - 25 but you then discarded the denominators on the right, which was incorrect.

3(x^2-25)/(x-5) = 3(x+5)

Anyway, now we are just left with

30 = 3(x+5) - 2(x-5)

which I'm sure you can solve. Just make sure your answer is not 5 or -5, because the original equation is undefined there. The fraction 3/(x-5) is not defined when x=5.

- math-calculus -
**Shreya**, Saturday, January 7, 2012 at 5:37pmthanks Steve but i think im still messing up. i got 30 = x+30

and if i subtract 30 from each side then i only left with x that be no solution. i think i not doing something right.

**Related Questions**

math-calculus - 30/x^2-25 = 3/x-5-2/x+5 i be left with 30 = 3x^2-75-2x^2+50 i ...

Math - Use the quadratic formula to solve each of the following quadratic ...

math,algebra - can someone help me out factor out this 0=16t^2-122t+180 i have ...

math - (4.35E-2 - x)(7.56E-2 -x ) ============================ (0.324 + 2x)2 ...

math-calculus - solve equation |x^2-2x-6| using quadratic formula. i not get how...

Pre-calculus need help!! - Quadratic Formula 1.) x+6/x=-7 2.) 4x/x+4 + 3/x-1 = ...

Algebra - For this equation x^(2) + x + 2 which you can't factor but then you ...

College Math II - Solve by using the quadratic formula. x^2 + 6x + 6 = 0 I am ...

math - quadratic equation of 48x^2-32x-35=0 i need both answers you must use the...

Math - Algebra - A. Solve the following quadratic equations. Make sure to show ...