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Simplifying 12 * 4 = 3 + x * x Multiply 12 * 4 48 = 3 + x * x Multiply x * x 48 = 3 + x2 Solving 48 = 3 + x2 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1x2' to each side of the equation. 48 + -1x2 = 3 + x2 + -1x2 Combine like terms: x2 + -1x2 = 0 48 + -1x2 = 3 + 0 48 + -1x2 = 3 Add '-48' to each side of the equation. 48 + -48 + -1x2 = 3 + -48 Combine like terms: 48 + -48 = 0 0 + -1x2 = 3 + -48 -1x2 = 3 + -48 Combine like terms: 3 + -48 = -45 -1x2 = -45 Divide each side by '-1'. x2 = 45 Simplifying x2 = 45 Take the square root of each side: x = {-6.708203933, 6.708203933}
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