Friday

July 25, 2014

July 25, 2014

Posted by on Monday, November 1, 2010 at 8:00am.

(a+2/a^2+a-2) - (3a+1/a^2+2a-3)

LCM is (a-1) (a+2) (a+3) right? then i get stuck

- math -
**Reiny**, Monday, November 1, 2010 at 8:18amso now change each fraction to have that LCD

[ (a+2)(a+3) - (3a+1)(a+2) ]/[(a-1)(a+2)(a+3)]

expand the top and collect like terms, leave the bottom alone

=(a^2 + 5a + 6 - 3a^2 - 7a - 2)/[(a-1)(a+2)(a+3)]

= (-2a^2 - 2a + 4)/[(a-1)(a+2)(a+3)]

= -2(a^2 + a - 2)/[(a-1)(a+2)(a+3)]

= -2(a+2)(a-1)/[(a-1)(a+2)(a+3)]

= -2/(a+3)

- math - , Monday, November 1, 2010 at 9:16am
Thanks!

**Related Questions**

math - Help with this complex fraction please... (a+2/a^2+a-2) - (3a+1/a^2+2a-3...

math - Need help solving this algebraic complex fraction please. a+3/b ------ b+...

algebra - Can someone please help me with these problems? Please and thank you. ...

Math - Find the LCM of 11(s-3) and 33(s-3). LCM of 11 is 11*1 LCM of 33 is 3*11 ...

math - please check my answers 1.which is smallest 5/8,3/4,9/16,7/8 =9/16 2....

math - is this right Find the LCM for the given numbers by an appropriate method...

Complex Fraction!! Help please!!! - Simplify COmplex Fraction: x-1 ---- x-3...

Math - Can someone check my answers for me pls? True or False LCM of 10 and 18 ...

chemistry - How to find moles given oxidation numbers and chemical formula? ...

5 th grade math - what is the mean for the following number? 40,60,55,45,100 ?...