solve-for-x-if-3-2-1-x-3-

Question Number 44212 by 12344 last updated on 23/Sep/18

solve for x if .

3^{2} - 1 = x^{3}

Answered by Joel578 last updated on 23/Sep/18

9 - 1 = x^{3}

x^{3} = 8

x = \sqrt[3]{8} = 2

Commented by MJS last updated on 23/Sep/18

x^{3} - 8 = 0

(x - 2) (x^{2} + 2 x + 4) = 0

x_{1} = 2

x_{2} = - 1 - i \sqrt{3}

x_{3} = - 1 + i \sqrt{3}

Commented by 12344 last updated on 23/Sep/18

wrong process

Commented by 12344 last updated on 23/Sep/18

wrong process

Commented by 12344 last updated on 23/Sep/18

wrong process

Commented by 12344 last updated on 23/Sep/18

big thanks to you sir .

butI need the answer for the other question . PLEASE .

Commented by 12344 last updated on 23/Sep/18

answer the other one for me please sir .

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