What are the solutions to the equation 2x^3-9x+8=0 ?

The solutions to the equation 2x^3-9x+8=0 are x\approx-2.47331…

Find the zeros of 2x^3-9x+8=0

The zeros of 2x^3-9x+8=0 are x\approx-2.47331…

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2 x^{3} - 9 x + 8 = 0

x \approx - 2.47331 \dots

Solution steps

2 x^{3} - 9 x + 8 = 0

Find one solution for

2 x^{3} - 9 x + 8 = 0

using Newton-Raphson:

x \approx - 2.47331 \dots

Apply long division:

\frac{2 x ^{3} - 9 x + 8}{x + 2.47331 \dots} = 2 x^{2} - 4.94662 \dots x + 3.23453 \dots

2 x^{2} - 4.94662 \dots x + 3.23453 \dots \approx 0

Find one solution for

2 x^{2} - 4.94662 \dots x + 3.23453 \dots = 0

using Newton-Raphson:

No Solution for

x \in R

The solution is

x \approx - 2.47331 \dots

- x^{4} - 4 x^{3} - 5 x^{2} - 2 = 0

f^{3} = f^{3} - 1 + f^{3} - 3

x, f (a + b) f = x^{4}

2 (3 x^{4}) = (2 x^{3}) (2 x^{4})

x^{23} - 2 x^{13} - 15 = 0

What are the solutions to the equation 2x^3-9x+8=0 ?
The solutions to the equation 2x^3-9x+8=0 are x\approx-2.47331…
Find the zeros of 2x^3-9x+8=0
The zeros of 2x^3-9x+8=0 are x\approx-2.47331…