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Simplifying 0 = -5t2 + 15t + 10 Reorder the terms: 0 = 10 + 15t + -5t2 Solving 0 = 10 + 15t + -5t2 Solving for variable 't'. Combine like terms: 0 + -10 = -10 -10 + -15t + 5t2 = 10 + 15t + -5t2 + -10 + -15t + 5t2 Reorder the terms: -10 + -15t + 5t2 = 10 + -10 + 15t + -15t + -5t2 + 5t2 Combine like terms: 10 + -10 = 0 -10 + -15t + 5t2 = 0 + 15t + -15t + -5t2 + 5t2 -10 + -15t + 5t2 = 15t + -15t + -5t2 + 5t2 Combine like terms: 15t + -15t = 0 -10 + -15t + 5t2 = 0 + -5t2 + 5t2 -10 + -15t + 5t2 = -5t2 + 5t2 Combine like terms: -5t2 + 5t2 = 0 -10 + -15t + 5t2 = 0 Factor out the Greatest Common Factor (GCF), '5'. 5(-2 + -3t + t2) = 0 Ignore the factor 5.Subproblem 1
Set the factor '(-2 + -3t + t2)' equal to zero and attempt to solve: Simplifying -2 + -3t + t2 = 0 Solving -2 + -3t + t2 = 0 Begin completing the square. Move the constant term to the right: Add '2' to each side of the equation. -2 + -3t + 2 + t2 = 0 + 2 Reorder the terms: -2 + 2 + -3t + t2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -3t + t2 = 0 + 2 -3t + t2 = 0 + 2 Combine like terms: 0 + 2 = 2 -3t + t2 = 2 The t term is -3t. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3t + 2.25 + t2 = 2 + 2.25 Reorder the terms: 2.25 + -3t + t2 = 2 + 2.25 Combine like terms: 2 + 2.25 = 4.25 2.25 + -3t + t2 = 4.25 Factor a perfect square on the left side: (t + -1.5)(t + -1.5) = 4.25 Calculate the square root of the right side: 2.061552813 Break this problem into two subproblems by setting (t + -1.5) equal to 2.061552813 and -2.061552813.Subproblem 1
t + -1.5 = 2.061552813 Simplifying t + -1.5 = 2.061552813 Reorder the terms: -1.5 + t = 2.061552813 Solving -1.5 + t = 2.061552813 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + t = 2.061552813 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + t = 2.061552813 + 1.5 t = 2.061552813 + 1.5 Combine like terms: 2.061552813 + 1.5 = 3.561552813 t = 3.561552813 Simplifying t = 3.561552813Subproblem 2
t + -1.5 = -2.061552813 Simplifying t + -1.5 = -2.061552813 Reorder the terms: -1.5 + t = -2.061552813 Solving -1.5 + t = -2.061552813 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + t = -2.061552813 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + t = -2.061552813 + 1.5 t = -2.061552813 + 1.5 Combine like terms: -2.061552813 + 1.5 = -0.561552813 t = -0.561552813 Simplifying t = -0.561552813Solution
The solution to the problem is based on the solutions from the subproblems. t = {3.561552813, -0.561552813}Solution
t = {3.561552813, -0.561552813}
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