-4.9t^2-2t+49=0

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Solution for -4.9t^2-2t+49=0 equation:


Simplifying
-4.9t2 + -2t + 49 = 0

Reorder the terms:
49 + -2t + -4.9t2 = 0

Solving
49 + -2t + -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'.
-10 + 0.4081632653t + t2 = 0

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + 0.4081632653t + 10 + t2 = 0 + 10

Reorder the terms:
-10 + 10 + 0.4081632653t + t2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 0.4081632653t + t2 = 0 + 10
0.4081632653t + t2 = 0 + 10

Combine like terms: 0 + 10 = 10
0.4081632653t + t2 = 10

The t term is 0.4081632653t.  Take half its coefficient (0.2040816327).
Square it (0.04164931281) and add it to both sides.

Add '0.04164931281' to each side of the equation.
0.4081632653t + 0.04164931281 + t2 = 10 + 0.04164931281

Reorder the terms:
0.04164931281 + 0.4081632653t + t2 = 10 + 0.04164931281

Combine like terms: 10 + 0.04164931281 = 10.04164931281
0.04164931281 + 0.4081632653t + t2 = 10.04164931281

Factor a perfect square on the left side:
(t + 0.2040816327)(t + 0.2040816327) = 10.04164931281

Calculate the square root of the right side: 3.168856152

Break this problem into two subproblems by setting 
(t + 0.2040816327) equal to 3.168856152 and -3.168856152.

Subproblem 1

t + 0.2040816327 = 3.168856152 Simplifying t + 0.2040816327 = 3.168856152 Reorder the terms: 0.2040816327 + t = 3.168856152 Solving 0.2040816327 + t = 3.168856152 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.2040816327' to each side of the equation. 0.2040816327 + -0.2040816327 + t = 3.168856152 + -0.2040816327 Combine like terms: 0.2040816327 + -0.2040816327 = 0.0000000000 0.0000000000 + t = 3.168856152 + -0.2040816327 t = 3.168856152 + -0.2040816327 Combine like terms: 3.168856152 + -0.2040816327 = 2.9647745193 t = 2.9647745193 Simplifying t = 2.9647745193

Subproblem 2

t + 0.2040816327 = -3.168856152 Simplifying t + 0.2040816327 = -3.168856152 Reorder the terms: 0.2040816327 + t = -3.168856152 Solving 0.2040816327 + t = -3.168856152 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.2040816327' to each side of the equation. 0.2040816327 + -0.2040816327 + t = -3.168856152 + -0.2040816327 Combine like terms: 0.2040816327 + -0.2040816327 = 0.0000000000 0.0000000000 + t = -3.168856152 + -0.2040816327 t = -3.168856152 + -0.2040816327 Combine like terms: -3.168856152 + -0.2040816327 = -3.3729377847 t = -3.3729377847 Simplifying t = -3.3729377847

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.9647745193, -3.3729377847}

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