Enable text based alternatives for graph display and drawing entry
Try Another Version of This Question
Subtract and simplify. `8/( x-9)-7/( x+9)`
`(135 x+ 1)/(x^2-81)`
`(x+135)/(x^2-81)`
`135/( x-9)`
`135/(x^2-81)`
`(x-135)/(x^2-81)`
Box 1:
Select the best answer
↑
X
MathQuill
Basic
General
Intervals
Inequalities
Functions
Trig
x
x
√
n
√
|
|
(
)
π
∞
DNE
x
√
(
)
π
∞
DNE
(
)
(
]
[
)
[
]
—∞
∞
∪
DNE
<
>
≤
≥
or
All Real Numbers
DNE
log
log
n
ln
n
√
|
|
e
sin
cos
tan
arcsin
arccos
arctan
⟨
⟩
∞
DNE
-∞
∞
∪
DNE
[more..]