Saturday

April 18, 2015

April 18, 2015

Posted by **whitney** on Tuesday, February 28, 2012 at 1:06pm.

a/ a^2-36

2a/a^2+5a-6

- algebra -
**Steve**, Tuesday, February 28, 2012 at 1:29pma^2 - 36 = (a+6)(a-6)

a^2 + 5a - 6 = (a+1)(a-6)

So, the LCD = (a+6)(a-6)(a+1)

to add them ,you'd do

a/(a+6)(a-6) + 2a/(a+1)(a-6)

= a(a+1)/(a+6)(a-6)(a+1) + 2a(a+6)/(a+6)(a-6)(a+1)

= (a^2 + a + 2a^2 + 12a)/(a+6)(a-6)(a+1)

= (3a^2 + 13a)/(a+6)(a-6)(a+1)

= a(3a+13)/(a+6)(a-6)(a+1)

= a(3a+13)/(a^3+a^2-36a-36)

**Answer this Question**

**Related Questions**

math - What is the least common denominator of the rational expressions x-1/x^2+...

evans - Find the least common denominator of the rational expressions. and

MATH - Find the least common denominator of the two rational expressions. 4k 2 ...

math - (X^2-1)/(x-1) = (x+1)(x-1)/(x-1) = x+1. If you then subtract your ...

MATH - Rational Expressions - HELP PLEASE! I am taking my college placement test...

algebra - Solve for x x/6-x/8 equals 1 Do fraction busters Find the least common...

Algebra - Can someone please explain how to do these problems. 1)write a ...

Algebra II - I have some questions on my assignment, if you dont mind could you ...

math - Express 13/10 - 2/15 as a simplified rational number. I want to make sure...

SAT math - True or False: The least common denominator of each denominator in ...