Question

Combine as indicated by the signs. Write answer in descending powers of x.
(x+6/x^2+8x+15) + (3x/x+5) - (x-3/x+3)

Answer 1

mylhuck the main deal in these question is to make denominator equal .... !

now one denominator is x^2 + 8x + 15


if we factorise then (x +3)(x +5)

now in expressions which have like x+3 as denominator ...you multiply and divide them by x+5 and once u get denominator equal you can add numerator easily

Answer 2

ahh thank you

Answer 3

x +6 + 3x(x + 3) - (x - 3)(x+5)
---------------------------------------
(x +3)(x +5)

Answer 4

: )

Answer 5

you rule

Answer 6

thnx maybe : )

Answer 7

ahh im lost again, what did you get as an answer on this?

Answer 8

ok ...

Answer 9

x + 6 + 3x^2 +9x -x^2 - 2x +15 for the numerator

when you simplify it

2x^2 + 8x +21
-------------
(x + 3)(x +5)

Answer 10

is this the answer or something else ?

Answer 11

ok i see now!

Answer 12

could you help me with one more?

Answer 13

yeah sure

Answer 14

3/x+1/xyz+2/xy

Answer 15

here what you can do is try to get xyz in evry denominator you can do it through multiply and divide !

Answer 16

i got 3xy+7x+2/xyz but thats not right

Answer 17

3yz 1 2z
--- + -- - + -----
x * yz xyz xy*z


3yz + 1 + 2z
---------------
xyz

Answer 18

do you get the answer now

Answer 19

yes thank uou so much