5/(x+4)^2 + 2/x+4 Help
2007-01-12 15:29:07 · 7 answers · asked by gail 1 in Science & Mathematics ➔ Mathematics
Given exp=5/(x+4)^2 +2/(x+4)
=5+2(x+4)/(x+4)^2
=(5+2x+8)/(x+4)^2
=2x+13/x^2+8x+16
2007-01-12 15:39:56 · answer #1 · answered by alpha 7 · 0⤊ 0⤋
you would go by the method P.E.M.D.A.S.
these stand for what you should do first.
P= Parenthesis-- do the problems in the parenthesis first
E= Expressions-- do this after "P"... which an expression is the power of as in " ^2 " for example
M= Multiply--do this next. if you have to multiply in parenthesis, do this first before the next steps.
D= Division
A= Add
S= Subtract
There is an easy way to remember this. I use the sentence "Please Excuse My Dear Aunt Sally".
your answer would be...
(x+4)^2 which would be... x^2 + 8x +16.
so... 5/ x^2 + *x + 16... leave this be...
add x+4 to x^2 + 8x + 16...
which would be... x^2 + 9x + 20
answer should come out as... 7/ x^2 + 9x + 20.
2007-01-12 15:46:02 · answer #2 · answered by locke32080 1 · 0⤊ 0⤋
These are just big, fancy fractions. Like any fractions, you can't add them until they have the same denominator. to make the second denominator look like the first, you have to multiply it by (x+4). But whatever you do to the denominator, you must do to the numerator as well. Once you do that your numerator, it becomes 2 ( x + 4 ) and you can now add that to the first numerator, 5, all this now over the common denominator (x+4)^2.
Simplifying: (2x + 13) / (x+4)^2
2007-01-12 15:50:55 · answer #3 · answered by bigcha 2 · 0⤊ 0⤋
5 / ((x + 4)^2) + 2/x + 4
5 / (x^2 + 8x + 16) + 2/x + 4
5x / (x^3 + 8x^2 + 16x) + 2(x^2 + 8x + 16) / (x^3 + 8x^2 + 16x) + 4(x^3 + 8x^2 + 16x) / (x^3 + 8x^2 + 16x)
(5x + 2(x^2 + 8x + 16) + 4(x^3 + 8x^2 + 16x)) / (x^3 + 8x^2 + 16x)
(5x + 2x^2 + 16x + 32 + 4x^3 + 32x^2 + 64x) / (x^3 + 8x^2 + 16x)
(4x^3 + 34x^2 + 85x + 32) / (x^3 + 8x^2 + 16x)
Geez that was a long problem!
Hope I helped!
10 points best answer?
2007-01-12 15:37:16 · answer #4 · answered by Cynyeh 3 · 0⤊ 0⤋
hi Connor, i m not sure abt the respond yet i've got tried to clean up it,its been 4 yrs now as quickly as I had final time solved this kind of element yet see atleast if u get some thought out of it.... answer:6-y ------------------ y^2-2y-24 6-y ------------------ y^2+6y-4y-24 6-y ------------------ y(y-6)+4(y-6) 6-y ------------------ (y-6)(y-4) now multipling by potential of -a million on dnontr and nmrtr y-6 --------------- (-4-y)(y-6) same (y-6) gets canceled, a million ----------- -a million(y+4) thats what i've got been given....
2016-12-13 04:35:05 · answer #5 · answered by schwarm 4 · 0⤊ 0⤋
multiply the second bit by (x + 4)/(x + 4)
2007-01-12 15:34:05 · answer #6 · answered by Anonymous · 0⤊ 0⤋
I can not even understand it. Oo
2007-01-12 15:53:27 · answer #7 · answered by Lizzie 5 · 0⤊ 0⤋