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Popular >

-x^2+9<= 0

Solution

- x^{2} + 9 \leq 0

Solution

x \leq - 3 or x \geq 3

+1

Interval Notation

(- \infty, - 3] \cup [3, \infty)

Solution steps

- x^{2} + 9 \leq 0

Move

9

to the right side

- x^{2} \leq - 9

Multiply both sides by

- 1

x^{2} \geq 9

For

u^{n} \geq a

, if

n

is even then

x \leq - 9 or x \geq 9

9 = 3

x \leq - 3 or x \geq 3

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Frequently Asked Questions (FAQ)

What is -x^2+9<= 0 ?
The solution to -x^2+9<= 0 is x<=-3\lor x>= 3