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Simplifying 4x2 + -16x + 64 = -5 Reorder the terms: 64 + -16x + 4x2 = -5 Solving 64 + -16x + 4x2 = -5 Solving for variable 'x'. Reorder the terms: 64 + 5 + -16x + 4x2 = -5 + 5 Combine like terms: 64 + 5 = 69 69 + -16x + 4x2 = -5 + 5 Combine like terms: -5 + 5 = 0 69 + -16x + 4x2 = 0 Begin completing the square. Divide all terms by 4 the coefficient of the squared term: Divide each side by '4'. 17.25 + -4x + x2 = 0 Move the constant term to the right: Add '-17.25' to each side of the equation. 17.25 + -4x + -17.25 + x2 = 0 + -17.25 Reorder the terms: 17.25 + -17.25 + -4x + x2 = 0 + -17.25 Combine like terms: 17.25 + -17.25 = 0.00 0.00 + -4x + x2 = 0 + -17.25 -4x + x2 = 0 + -17.25 Combine like terms: 0 + -17.25 = -17.25 -4x + x2 = -17.25 The x term is -4x. Take half its coefficient (-2). Square it (4) and add it to both sides. Add '4' to each side of the equation. -4x + 4 + x2 = -17.25 + 4 Reorder the terms: 4 + -4x + x2 = -17.25 + 4 Combine like terms: -17.25 + 4 = -13.25 4 + -4x + x2 = -13.25 Factor a perfect square on the left side: (x + -2)(x + -2) = -13.25 Can't calculate square root of the right side. The solution to this equation could not be determined.
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