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Simplifying x2 + 72 = 12x Reorder the terms: 72 + x2 = 12x Solving 72 + x2 = 12x Solving for variable 'x'. Reorder the terms: 72 + -12x + x2 = 12x + -12x Combine like terms: 12x + -12x = 0 72 + -12x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '-72' to each side of the equation. 72 + -12x + -72 + x2 = 0 + -72 Reorder the terms: 72 + -72 + -12x + x2 = 0 + -72 Combine like terms: 72 + -72 = 0 0 + -12x + x2 = 0 + -72 -12x + x2 = 0 + -72 Combine like terms: 0 + -72 = -72 -12x + x2 = -72 The x term is -12x. Take half its coefficient (-6). Square it (36) and add it to both sides. Add '36' to each side of the equation. -12x + 36 + x2 = -72 + 36 Reorder the terms: 36 + -12x + x2 = -72 + 36 Combine like terms: -72 + 36 = -36 36 + -12x + x2 = -36 Factor a perfect square on the left side: (x + -6)(x + -6) = -36 Can't calculate square root of the right side. The solution to this equation could not be determined.
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