angrynoodle angrynoodle

09-02-2019
Mathematics

contestada

What are the real or imaginary solutions of the polynomial x^3=9x

What are the real or imaginary solutions of the polynomial x39x class=

Respuesta :

MrBillDoesMath MrBillDoesMath

09-02-2019

Hello from MrBillDoesMath!

Answer:

x = 0, +\-3

Discussion:

x^3 = 9x => subtract 9x from both sides

x^3 - 9x = 0 => factor x from both terms

x(x^2-9) = 0 => x = 0 or x^2 - 9 = 0

x = 0, +\-3

Thank you,

MrB

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