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Simplifying -4.9t2 + -10t + -15 = 0 Reorder the terms: -15 + -10t + -4.9t2 = 0 Solving -15 + -10t + -4.9t2 = 0 Solving for variable 't'. Begin completing the square. Divide all terms by -4.9 the coefficient of the squared term: Divide each side by '-4.9'. 3.06122449 + 2.040816327t + t2 = 0 Move the constant term to the right: Add '-3.06122449' to each side of the equation. 3.06122449 + 2.040816327t + -3.06122449 + t2 = 0 + -3.06122449 Reorder the terms: 3.06122449 + -3.06122449 + 2.040816327t + t2 = 0 + -3.06122449 Combine like terms: 3.06122449 + -3.06122449 = 0.00000000 0.00000000 + 2.040816327t + t2 = 0 + -3.06122449 2.040816327t + t2 = 0 + -3.06122449 Combine like terms: 0 + -3.06122449 = -3.06122449 2.040816327t + t2 = -3.06122449 The t term is 2.040816327t. Take half its coefficient (1.020408164). Square it (1.041232821) and add it to both sides. Add '1.041232821' to each side of the equation. 2.040816327t + 1.041232821 + t2 = -3.06122449 + 1.041232821 Reorder the terms: 1.041232821 + 2.040816327t + t2 = -3.06122449 + 1.041232821 Combine like terms: -3.06122449 + 1.041232821 = -2.019991669 1.041232821 + 2.040816327t + t2 = -2.019991669 Factor a perfect square on the left side: (t + 1.020408164)(t + 1.020408164) = -2.019991669 Can't calculate square root of the right side. The solution to this equation could not be determined.
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