How do you factor completely $9x^4 - 12x^2 +4 = 0$ ?

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Answer 1 · 2018-03-02T11:46:36

$:. x=+-sqrt(2/3)$ .

I hope the Problem is to solve the eqn. $9x^4-12x^2+4=0$ .

$9x^4-12x^2+4=0$ .

$:. (3x^2)^2-2(3x^2)(2)+(2)^2=0$ .

$:. (3x^2-2)^2=0$ .

$:. 3x^2=2, or, x^2=2/3$ .

$:. x=+-sqrt(2/3)$ .

How do you factor completely 9x^4 - 12x^2 +4 = 09x^4 - 12x^2 +4 = 0?