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Simplifying x(4x) + x + 36 = 0 Remove parenthesis around (4x) x * 4x + x + 36 = 0 Reorder the terms for easier multiplication: 4x * x + x + 36 = 0 Multiply x * x 4x2 + x + 36 = 0 Reorder the terms: 36 + x + 4x2 = 0 Solving 36 + x + 4x2 = 0 Solving for variable 'x'. Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 9 + 0.25x + x2 = 0 Move the constant term to the right: Add '-9' to each side of the equation. 9 + 0.25x + -9 + x2 = 0 + -9 Reorder the terms: 9 + -9 + 0.25x + x2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + 0.25x + x2 = 0 + -9 0.25x + x2 = 0 + -9 Combine like terms: 0 + -9 = -9 0.25x + x2 = -9 The x term is x. Take half its coefficient (0.5). Square it (0.25) and add it to both sides. Add '0.25' to each side of the equation. 0.25x + 0.25 + x2 = -9 + 0.25 Reorder the terms: 0.25 + 0.25x + x2 = -9 + 0.25 Combine like terms: -9 + 0.25 = -8.75 0.25 + 0.25x + x2 = -8.75 Factor a perfect square on the left side: (x + 0.5)(x + 0.5) = -8.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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