x*3x=3*81

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Solution for x*3x=3*81 equation: 


Simplifying
x * 3x = 3 * 81

Reorder the terms for easier multiplication:
3x * x = 3 * 81

Multiply x * x
3x2 = 3 * 81

Multiply 3 * 81
3x2 = 243

Solving
3x2 = 243

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Divide each side by '3'.
x2 = 81

Simplifying
x2 = 81

Take the square root of each side:
x = {-9, 9}

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