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Popular >

4x^2(x^2-9)<= 0

Solution

4 x^{2} (x^{2} - 9) \leq 0

Solution

- 3 \leq x \leq 3

+1

Solution steps

4 x^{2} (x^{2} - 9) \leq 0

Rewrite in standard form

x^{4} - 9 x^{2} \leq 0

Factor

x^{4} - 9 x^{2} : x^{2} (x + 3) (x - 3)

x^{2} (x + 3) (x - 3) \leq 0

Identify the intervals

- 3 \leq x \leq 3

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Frequently Asked Questions (FAQ)

What is 4x^2(x^2-9)<= 0 ?
The solution to 4x^2(x^2-9)<= 0 is -3<= x<= 3