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Simplifying x2 + -40x + 625 = 0 Reorder the terms: 625 + -40x + x2 = 0 Solving 625 + -40x + x2 = 0 Solving for variable 'x'. Begin completing the square. Move the constant term to the right: Add '-625' to each side of the equation. 625 + -40x + -625 + x2 = 0 + -625 Reorder the terms: 625 + -625 + -40x + x2 = 0 + -625 Combine like terms: 625 + -625 = 0 0 + -40x + x2 = 0 + -625 -40x + x2 = 0 + -625 Combine like terms: 0 + -625 = -625 -40x + x2 = -625 The x term is -40x. Take half its coefficient (-20). Square it (400) and add it to both sides. Add '400' to each side of the equation. -40x + 400 + x2 = -625 + 400 Reorder the terms: 400 + -40x + x2 = -625 + 400 Combine like terms: -625 + 400 = -225 400 + -40x + x2 = -225 Factor a perfect square on the left side: (x + -20)(x + -20) = -225 Can't calculate square root of the right side. The solution to this equation could not be determined.
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