4.9t^2+t-14=0

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Solution for 4.9t^2+t-14=0 equation:


Simplifying
4.9t2 + t + -14 = 0

Reorder the terms:
-14 + t + 4.9t2 = 0

Solving
-14 + t + 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'.
-2.857142857 + 0.2040816327t + t2 = 0

Move the constant term to the right:

Add '2.857142857' to each side of the equation.
-2.857142857 + 0.2040816327t + 2.857142857 + t2 = 0 + 2.857142857

Reorder the terms:
-2.857142857 + 2.857142857 + 0.2040816327t + t2 = 0 + 2.857142857

Combine like terms: -2.857142857 + 2.857142857 = 0.000000000
0.000000000 + 0.2040816327t + t2 = 0 + 2.857142857
0.2040816327t + t2 = 0 + 2.857142857

Combine like terms: 0 + 2.857142857 = 2.857142857
0.2040816327t + t2 = 2.857142857

The t term is t.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.2040816327t + 0.25 + t2 = 2.857142857 + 0.25

Reorder the terms:
0.25 + 0.2040816327t + t2 = 2.857142857 + 0.25

Combine like terms: 2.857142857 + 0.25 = 3.107142857
0.25 + 0.2040816327t + t2 = 3.107142857

Factor a perfect square on the left side:
(t + 0.5)(t + 0.5) = 3.107142857

Calculate the square root of the right side: 1.762708954

Break this problem into two subproblems by setting 
(t + 0.5) equal to 1.762708954 and -1.762708954.

Subproblem 1

t + 0.5 = 1.762708954 Simplifying t + 0.5 = 1.762708954 Reorder the terms: 0.5 + t = 1.762708954 Solving 0.5 + t = 1.762708954 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + t = 1.762708954 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + t = 1.762708954 + -0.5 t = 1.762708954 + -0.5 Combine like terms: 1.762708954 + -0.5 = 1.262708954 t = 1.262708954 Simplifying t = 1.262708954

Subproblem 2

t + 0.5 = -1.762708954 Simplifying t + 0.5 = -1.762708954 Reorder the terms: 0.5 + t = -1.762708954 Solving 0.5 + t = -1.762708954 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + t = -1.762708954 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + t = -1.762708954 + -0.5 t = -1.762708954 + -0.5 Combine like terms: -1.762708954 + -0.5 = -2.262708954 t = -2.262708954 Simplifying t = -2.262708954

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.262708954, -2.262708954}

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