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Simplifying -1t2 + 5t + -9 = 0 Reorder the terms: -9 + 5t + -1t2 = 0 Solving -9 + 5t + -1t2 = 0 Solving for variable 't'. Begin completing the square. Divide all terms by -1 the coefficient of the squared term: Divide each side by '-1'. 9 + -5t + t2 = 0 Move the constant term to the right: Add '-9' to each side of the equation. 9 + -5t + -9 + t2 = 0 + -9 Reorder the terms: 9 + -9 + -5t + t2 = 0 + -9 Combine like terms: 9 + -9 = 0 0 + -5t + t2 = 0 + -9 -5t + t2 = 0 + -9 Combine like terms: 0 + -9 = -9 -5t + t2 = -9 The t term is -5t. Take half its coefficient (-2.5). Square it (6.25) and add it to both sides. Add '6.25' to each side of the equation. -5t + 6.25 + t2 = -9 + 6.25 Reorder the terms: 6.25 + -5t + t2 = -9 + 6.25 Combine like terms: -9 + 6.25 = -2.75 6.25 + -5t + t2 = -2.75 Factor a perfect square on the left side: (t + -2.5)(t + -2.5) = -2.75 Can't calculate square root of the right side. The solution to this equation could not be determined.
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