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Popular >

4/(x^2+9)>0

Solution

\frac{4}{x ^{2} + 9} > 0

Solution

True for all x

+1

Interval Notation

(- \infty, \infty)

Solution steps

\frac{4}{x ^{2} + 9} > 0

Divide both sides by

4

\frac{\frac{4}{x ^{2} + 9}}{4} > \frac{0}{4}

Simplify

\frac{1}{x ^{2} + 9} > 0

If

\frac{1}{a} > 0

then

a > 0

x^{2} + 9 > 0

Move

9

to the right side

x^{2} > - 9

If n is even,

u^{n} \geq 0

for all

u

True for all x

Popular Examples

simplify 10/11-1/2 simplify

\frac{10}{11} - \frac{1}{2}

8 x^{2} - 14 x - 15 = 0

5 - x > 0

simplify 1/(1/x+1/y)simplify

\frac{1}{\frac{1}{x} + \frac{1}{y}}

simplify (1/4)^{5/2}simplify

(\frac{1}{4})^{\frac{5}{2}}

Frequently Asked Questions (FAQ)

What is 4/(x^2+9)>0 ?
The solution to 4/(x^2+9)>0 is True for all x