42=-16t^2+88t+4

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Solution for 42=-16t^2+88t+4 equation:


Simplifying
42 = -16t2 + 88t + 4

Reorder the terms:
42 = 4 + 88t + -16t2

Solving
42 = 4 + 88t + -16t2

Solving for variable 't'.

Combine like terms: 42 + -4 = 38
38 + -88t + 16t2 = 4 + 88t + -16t2 + -4 + -88t + 16t2

Reorder the terms:
38 + -88t + 16t2 = 4 + -4 + 88t + -88t + -16t2 + 16t2

Combine like terms: 4 + -4 = 0
38 + -88t + 16t2 = 0 + 88t + -88t + -16t2 + 16t2
38 + -88t + 16t2 = 88t + -88t + -16t2 + 16t2

Combine like terms: 88t + -88t = 0
38 + -88t + 16t2 = 0 + -16t2 + 16t2
38 + -88t + 16t2 = -16t2 + 16t2

Combine like terms: -16t2 + 16t2 = 0
38 + -88t + 16t2 = 0

Factor out the Greatest Common Factor (GCF), '2'.
2(19 + -44t + 8t2) = 0

Ignore the factor 2.

Subproblem 1

Set the factor '(19 + -44t + 8t2)' equal to zero and attempt to solve: Simplifying 19 + -44t + 8t2 = 0 Solving 19 + -44t + 8t2 = 0 Begin completing the square. Divide all terms by 8 the coefficient of the squared term: Divide each side by '8'. 2.375 + -5.5t + t2 = 0 Move the constant term to the right: Add '-2.375' to each side of the equation. 2.375 + -5.5t + -2.375 + t2 = 0 + -2.375 Reorder the terms: 2.375 + -2.375 + -5.5t + t2 = 0 + -2.375 Combine like terms: 2.375 + -2.375 = 0.000 0.000 + -5.5t + t2 = 0 + -2.375 -5.5t + t2 = 0 + -2.375 Combine like terms: 0 + -2.375 = -2.375 -5.5t + t2 = -2.375 The t term is -5.5t. Take half its coefficient (-2.75). Square it (7.5625) and add it to both sides. Add '7.5625' to each side of the equation. -5.5t + 7.5625 + t2 = -2.375 + 7.5625 Reorder the terms: 7.5625 + -5.5t + t2 = -2.375 + 7.5625 Combine like terms: -2.375 + 7.5625 = 5.1875 7.5625 + -5.5t + t2 = 5.1875 Factor a perfect square on the left side: (t + -2.75)(t + -2.75) = 5.1875 Calculate the square root of the right side: 2.277608395 Break this problem into two subproblems by setting (t + -2.75) equal to 2.277608395 and -2.277608395.

Subproblem 1

t + -2.75 = 2.277608395 Simplifying t + -2.75 = 2.277608395 Reorder the terms: -2.75 + t = 2.277608395 Solving -2.75 + t = 2.277608395 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + t = 2.277608395 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + t = 2.277608395 + 2.75 t = 2.277608395 + 2.75 Combine like terms: 2.277608395 + 2.75 = 5.027608395 t = 5.027608395 Simplifying t = 5.027608395

Subproblem 2

t + -2.75 = -2.277608395 Simplifying t + -2.75 = -2.277608395 Reorder the terms: -2.75 + t = -2.277608395 Solving -2.75 + t = -2.277608395 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.75' to each side of the equation. -2.75 + 2.75 + t = -2.277608395 + 2.75 Combine like terms: -2.75 + 2.75 = 0.00 0.00 + t = -2.277608395 + 2.75 t = -2.277608395 + 2.75 Combine like terms: -2.277608395 + 2.75 = 0.472391605 t = 0.472391605 Simplifying t = 0.472391605

Solution

The solution to the problem is based on the solutions from the subproblems. t = {5.027608395, 0.472391605}

Solution

t = {5.027608395, 0.472391605}

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