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Popular >

81-x^2>0

Solution

81 - x^{2} > 0

Solution

- 9 < x < 9

+1

Interval Notation

(- 9, 9)

Solution steps

81 - x^{2} > 0

Move

81

to the right side

- x^{2} > - 81

Multiply both sides by

- 1

x^{2} < 81

For

u^{n} < a

, if

n

is even then

- 81 < x < 81

81 = 9

- 9 < x < 9

Popular Examples

simplify 1/2*8*8 simplify

\frac{1}{2} \cdot 8 \cdot 8

- 100 = 12 t - 4

4x(x-8)<2(2x-1)(x-9)

4 x (x - 8) < 2 (2 x - 1) (x - 9)

factor 64x^2+0.5+1/(1024x^2)factor

64 x^{2} + 0.5 + \frac{1}{1024 x ^{2}}

0 = x^{2} - 3 x + 1

Frequently Asked Questions (FAQ)

What is 81-x^2>0 ?
The solution to 81-x^2>0 is -9<x<9