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Simplifying b2 + 6b + 20 = -5 Reorder the terms: 20 + 6b + b2 = -5 Solving 20 + 6b + b2 = -5 Solving for variable 'b'. Reorder the terms: 20 + 5 + 6b + b2 = -5 + 5 Combine like terms: 20 + 5 = 25 25 + 6b + b2 = -5 + 5 Combine like terms: -5 + 5 = 0 25 + 6b + b2 = 0 Begin completing the square. Move the constant term to the right: Add '-25' to each side of the equation. 25 + 6b + -25 + b2 = 0 + -25 Reorder the terms: 25 + -25 + 6b + b2 = 0 + -25 Combine like terms: 25 + -25 = 0 0 + 6b + b2 = 0 + -25 6b + b2 = 0 + -25 Combine like terms: 0 + -25 = -25 6b + b2 = -25 The b term is 6b. Take half its coefficient (3). Square it (9) and add it to both sides. Add '9' to each side of the equation. 6b + 9 + b2 = -25 + 9 Reorder the terms: 9 + 6b + b2 = -25 + 9 Combine like terms: -25 + 9 = -16 9 + 6b + b2 = -16 Factor a perfect square on the left side: (b + 3)(b + 3) = -16 Can't calculate square root of the right side. The solution to this equation could not be determined.
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