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Simplifying s2 + 20 + 4s = 0 Reorder the terms: 20 + 4s + s2 = 0 Solving 20 + 4s + s2 = 0 Solving for variable 's'. Begin completing the square. Move the constant term to the right: Add '-20' to each side of the equation. 20 + 4s + -20 + s2 = 0 + -20 Reorder the terms: 20 + -20 + 4s + s2 = 0 + -20 Combine like terms: 20 + -20 = 0 0 + 4s + s2 = 0 + -20 4s + s2 = 0 + -20 Combine like terms: 0 + -20 = -20 4s + s2 = -20 The s term is 4s. Take half its coefficient (2). Square it (4) and add it to both sides. Add '4' to each side of the equation. 4s + 4 + s2 = -20 + 4 Reorder the terms: 4 + 4s + s2 = -20 + 4 Combine like terms: -20 + 4 = -16 4 + 4s + s2 = -16 Factor a perfect square on the left side: (s + 2)(s + 2) = -16 Can't calculate square root of the right side. The solution to this equation could not be determined.
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