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Simplifying 2x * 2x = 84 Reorder the terms for easier multiplication: 2 * 2x * x = 84 Multiply 2 * 2 4x * x = 84 Multiply x * x 4x2 = 84 Solving 4x2 = 84 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Divide each side by '4'. x2 = 21 Simplifying x2 = 21 Take the square root of each side: x = {-4.582575695, 4.582575695}
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