4x^3-6x-164x^3-6x-16=0

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4x^3-6x-164x^3-6x-16=0

4x^3-6x-164x^3-6x-16=0
4x^3-6x-16
4x^3-6x-16=0

4x^3-6x-164x^3-6x-16=0
4x^3-6x-16
=2(2x^3-3x-8)
x1=1.899034800720710.

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