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Simplifying 2b + -1b2 + -15 = 0 Reorder the terms: -15 + 2b + -1b2 = 0 Solving -15 + 2b + -1b2 = 0 Solving for variable 'b'. Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 15 + -2b + b2 = 0 Move the constant term to the right: Add '-15' to each side of the equation. 15 + -2b + -15 + b2 = 0 + -15 Reorder the terms: 15 + -15 + -2b + b2 = 0 + -15 Combine like terms: 15 + -15 = 0 0 + -2b + b2 = 0 + -15 -2b + b2 = 0 + -15 Combine like terms: 0 + -15 = -15 -2b + b2 = -15 The b term is -2b. Take half its coefficient (-1). Square it (1) and add it to both sides. Add '1' to each side of the equation. -2b + 1 + b2 = -15 + 1 Reorder the terms: 1 + -2b + b2 = -15 + 1 Combine like terms: -15 + 1 = -14 1 + -2b + b2 = -14 Factor a perfect square on the left side: (b + -1)(b + -1) = -14 Can't calculate square root of the right side. The solution to this equation could not be determined.
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