10> The minimum value of 0,3x + 12 / x square, where x is taken as? be careful! Square on denominator!

When 3x is disassembled into 1.5x
The original formula = 3x / 2 + 3x / 2 + 12 / x ^ 2 > = 3 * cubic root (3x / 2 * 3x / 2 * 12 / x ^ 2) = 3 * 3 = 9
Take the equal sign if and only if 1.5x = 12 / x ^ 2
It's over

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