6.
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The square root of 36 is 6. 6 cubed is 216.
It equals -36. To solve replace x with -6, because it is the value given in the problem and then just multiply. 6(-6)= -36.
6
x2-12x+36 = (x-6)2
The answer will wind up being a pair of complex numbers. One way you can solve for x is by completing the square: 3x2 - x + 5 = 0 3x2 - x = -5 x2 - x/3 = -5/3 x2 - x/3 + 1/36 = -5/3 + 1/36 (x - 1/6)2 = (-60 + 1) / 36 (x - 1/6)2 = -59 / 36 x - 1/6 = ± √(-59 / 36) x - 1/6 = ± i√(59 / 36) x - 1/6 = ± i√59 / 6 x = 1/6 ± i√59 / 6 x = (1 ± i√59) / 6