4.9t^2-23t+11=0

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Solution for 4.9t^2-23t+11=0 equation:


Simplifying
4.9t2 + -23t + 11 = 0

Reorder the terms:
11 + -23t + 4.9t2 = 0

Solving
11 + -23t + 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'.
2.244897959 + -4.693877551t + t2 = 0

Move the constant term to the right:

Add '-2.244897959' to each side of the equation.
2.244897959 + -4.693877551t + -2.244897959 + t2 = 0 + -2.244897959

Reorder the terms:
2.244897959 + -2.244897959 + -4.693877551t + t2 = 0 + -2.244897959

Combine like terms: 2.244897959 + -2.244897959 = 0.000000000
0.000000000 + -4.693877551t + t2 = 0 + -2.244897959
-4.693877551t + t2 = 0 + -2.244897959

Combine like terms: 0 + -2.244897959 = -2.244897959
-4.693877551t + t2 = -2.244897959

The t term is -4.693877551t.  Take half its coefficient (-2.346938776).
Square it (5.508121618) and add it to both sides.

Add '5.508121618' to each side of the equation.
-4.693877551t + 5.508121618 + t2 = -2.244897959 + 5.508121618

Reorder the terms:
5.508121618 + -4.693877551t + t2 = -2.244897959 + 5.508121618

Combine like terms: -2.244897959 + 5.508121618 = 3.263223659
5.508121618 + -4.693877551t + t2 = 3.263223659

Factor a perfect square on the left side:
(t + -2.346938776)(t + -2.346938776) = 3.263223659

Calculate the square root of the right side: 1.806439498

Break this problem into two subproblems by setting 
(t + -2.346938776) equal to 1.806439498 and -1.806439498.

Subproblem 1

t + -2.346938776 = 1.806439498 Simplifying t + -2.346938776 = 1.806439498 Reorder the terms: -2.346938776 + t = 1.806439498 Solving -2.346938776 + t = 1.806439498 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.346938776' to each side of the equation. -2.346938776 + 2.346938776 + t = 1.806439498 + 2.346938776 Combine like terms: -2.346938776 + 2.346938776 = 0.000000000 0.000000000 + t = 1.806439498 + 2.346938776 t = 1.806439498 + 2.346938776 Combine like terms: 1.806439498 + 2.346938776 = 4.153378274 t = 4.153378274 Simplifying t = 4.153378274

Subproblem 2

t + -2.346938776 = -1.806439498 Simplifying t + -2.346938776 = -1.806439498 Reorder the terms: -2.346938776 + t = -1.806439498 Solving -2.346938776 + t = -1.806439498 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2.346938776' to each side of the equation. -2.346938776 + 2.346938776 + t = -1.806439498 + 2.346938776 Combine like terms: -2.346938776 + 2.346938776 = 0.000000000 0.000000000 + t = -1.806439498 + 2.346938776 t = -1.806439498 + 2.346938776 Combine like terms: -1.806439498 + 2.346938776 = 0.540499278 t = 0.540499278 Simplifying t = 0.540499278

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4.153378274, 0.540499278}

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