fraction decomposition

(4x+44)/(x^2+12x+32)

annnd

(2x+5)/(x^2-6x+9)

thanks a ton!

Printable View

- Mar 25th 2013, 10:23 PMafinefrenzyTrig is awful..ish...haha help figuring this out pls?
fraction decomposition

(4x+44)/(x^2+12x+32)

annnd

(2x+5)/(x^2-6x+9)

thanks a ton! - Aug 13th 2013, 12:32 AMbrosnan123Re: Trig is awful..ish...haha help figuring this out pls?
Solution:

Given 4x+44/(x²+12+32)=4x+44/[(x+8)(x+4)]

4x+44/[(x+8)(x+4)]=A/(x+8)+B/(x+4)

4x+44=A(x+4)+B(x+8).........(1)

put x=-4 in (1)

we get B=7

put x=-8 in (1)

we get A=-3

there for the 4x+44/(x²+12+32)=-3/(x+8)+7(x+4)

Solution:

Given 2x+5/(x²-6x+9)=2x+5/(x-3)²

2x+5/(x-3)²=A/(x-3)+B/(x-3)²

2x+5=A(x-3)²+B(x-3)

2x+5=A(x²+9-6x)+B(x-3)

2x+5=Ax²+(-6A+b)x-9A-3B...(1)

solving (1) we get A=0

B=2 - Aug 19th 2013, 02:35 AMibduttRe: Trig is awful..ish...haha help figuring this out pls?
- Aug 19th 2013, 03:01 AMProve ItRe: Trig is awful..ish...haha help figuring this out pls?
This is algebra, not trigonometry...