4.9t^2-11.5t-58=0

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Solution for 4.9t^2-11.5t-58=0 equation:


Simplifying
4.9t2 + -11.5t + -58 = 0

Reorder the terms:
-58 + -11.5t + 4.9t2 = 0

Solving
-58 + -11.5t + 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'.
-11.83673469 + -2.346938776t + t2 = 0

Move the constant term to the right:

Add '11.83673469' to each side of the equation.
-11.83673469 + -2.346938776t + 11.83673469 + t2 = 0 + 11.83673469

Reorder the terms:
-11.83673469 + 11.83673469 + -2.346938776t + t2 = 0 + 11.83673469

Combine like terms: -11.83673469 + 11.83673469 = 0.00000000
0.00000000 + -2.346938776t + t2 = 0 + 11.83673469
-2.346938776t + t2 = 0 + 11.83673469

Combine like terms: 0 + 11.83673469 = 11.83673469
-2.346938776t + t2 = 11.83673469

The t term is -2.346938776t.  Take half its coefficient (-1.173469388).
Square it (1.377030405) and add it to both sides.

Add '1.377030405' to each side of the equation.
-2.346938776t + 1.377030405 + t2 = 11.83673469 + 1.377030405

Reorder the terms:
1.377030405 + -2.346938776t + t2 = 11.83673469 + 1.377030405

Combine like terms: 11.83673469 + 1.377030405 = 13.213765095
1.377030405 + -2.346938776t + t2 = 13.213765095

Factor a perfect square on the left side:
(t + -1.173469388)(t + -1.173469388) = 13.213765095

Calculate the square root of the right side: 3.63507429

Break this problem into two subproblems by setting 
(t + -1.173469388) equal to 3.63507429 and -3.63507429.

Subproblem 1

t + -1.173469388 = 3.63507429 Simplifying t + -1.173469388 = 3.63507429 Reorder the terms: -1.173469388 + t = 3.63507429 Solving -1.173469388 + t = 3.63507429 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.173469388' to each side of the equation. -1.173469388 + 1.173469388 + t = 3.63507429 + 1.173469388 Combine like terms: -1.173469388 + 1.173469388 = 0.000000000 0.000000000 + t = 3.63507429 + 1.173469388 t = 3.63507429 + 1.173469388 Combine like terms: 3.63507429 + 1.173469388 = 4.808543678 t = 4.808543678 Simplifying t = 4.808543678

Subproblem 2

t + -1.173469388 = -3.63507429 Simplifying t + -1.173469388 = -3.63507429 Reorder the terms: -1.173469388 + t = -3.63507429 Solving -1.173469388 + t = -3.63507429 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.173469388' to each side of the equation. -1.173469388 + 1.173469388 + t = -3.63507429 + 1.173469388 Combine like terms: -1.173469388 + 1.173469388 = 0.000000000 0.000000000 + t = -3.63507429 + 1.173469388 t = -3.63507429 + 1.173469388 Combine like terms: -3.63507429 + 1.173469388 = -2.461604902 t = -2.461604902 Simplifying t = -2.461604902

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.808543678, -2.461604902}

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