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Simplifying
x(4x) = 3 * 4 * 3
Remove parenthesis around (4x)
x * 4x = 3 * 4 * 3
Reorder the terms for easier multiplication:
4x * x = 3 * 4 * 3
Multiply x * x
4x2 = 3 * 4 * 3
Multiply 3 * 4
4x2 = 12 * 3
Multiply 12 * 3
4x2 = 36
Solving
4x2 = 36
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Divide each side by '4'.
x2 = 9
Simplifying
x2 = 9
Take the square root of each side:
x = {-3, 3}
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