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Simplifying t2 + -7t = 7 Reorder the terms: -7t + t2 = 7 Solving -7t + t2 = 7 Solving for variable 't'. Reorder the terms: -7 + -7t + t2 = 7 + -7 Combine like terms: 7 + -7 = 0 -7 + -7t + t2 = 0 Begin completing the square. Move the constant term to the right: Add '7' to each side of the equation. -7 + -7t + 7 + t2 = 0 + 7 Reorder the terms: -7 + 7 + -7t + t2 = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -7t + t2 = 0 + 7 -7t + t2 = 0 + 7 Combine like terms: 0 + 7 = 7 -7t + t2 = 7 The t term is -7t. Take half its coefficient (-3.5). Square it (12.25) and add it to both sides. Add '12.25' to each side of the equation. -7t + 12.25 + t2 = 7 + 12.25 Reorder the terms: 12.25 + -7t + t2 = 7 + 12.25 Combine like terms: 7 + 12.25 = 19.25 12.25 + -7t + t2 = 19.25 Factor a perfect square on the left side: (t + -3.5)(t + -3.5) = 19.25 Calculate the square root of the right side: 4.387482194 Break this problem into two subproblems by setting (t + -3.5) equal to 4.387482194 and -4.387482194.Subproblem 1
t + -3.5 = 4.387482194 Simplifying t + -3.5 = 4.387482194 Reorder the terms: -3.5 + t = 4.387482194 Solving -3.5 + t = 4.387482194 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + t = 4.387482194 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + t = 4.387482194 + 3.5 t = 4.387482194 + 3.5 Combine like terms: 4.387482194 + 3.5 = 7.887482194 t = 7.887482194 Simplifying t = 7.887482194Subproblem 2
t + -3.5 = -4.387482194 Simplifying t + -3.5 = -4.387482194 Reorder the terms: -3.5 + t = -4.387482194 Solving -3.5 + t = -4.387482194 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + t = -4.387482194 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + t = -4.387482194 + 3.5 t = -4.387482194 + 3.5 Combine like terms: -4.387482194 + 3.5 = -0.887482194 t = -0.887482194 Simplifying t = -0.887482194Solution
The solution to the problem is based on the solutions from the subproblems. t = {7.887482194, -0.887482194}
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