4.9t^2-12t-3=0

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Solution for 4.9t^2-12t-3=0 equation:


Simplifying
4.9t2 + -12t + -3 = 0

Reorder the terms:
-3 + -12t + 4.9t2 = 0

Solving
-3 + -12t + 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'.
-0.612244898 + -2.448979592t + t2 = 0

Move the constant term to the right:

Add '0.612244898' to each side of the equation.
-0.612244898 + -2.448979592t + 0.612244898 + t2 = 0 + 0.612244898

Reorder the terms:
-0.612244898 + 0.612244898 + -2.448979592t + t2 = 0 + 0.612244898

Combine like terms: -0.612244898 + 0.612244898 = 0.000000000
0.000000000 + -2.448979592t + t2 = 0 + 0.612244898
-2.448979592t + t2 = 0 + 0.612244898

Combine like terms: 0 + 0.612244898 = 0.612244898
-2.448979592t + t2 = 0.612244898

The t term is -2.448979592t.  Take half its coefficient (-1.224489796).
Square it (1.499375261) and add it to both sides.

Add '1.499375261' to each side of the equation.
-2.448979592t + 1.499375261 + t2 = 0.612244898 + 1.499375261

Reorder the terms:
1.499375261 + -2.448979592t + t2 = 0.612244898 + 1.499375261

Combine like terms: 0.612244898 + 1.499375261 = 2.111620159
1.499375261 + -2.448979592t + t2 = 2.111620159

Factor a perfect square on the left side:
(t + -1.224489796)(t + -1.224489796) = 2.111620159

Calculate the square root of the right side: 1.453141479

Break this problem into two subproblems by setting 
(t + -1.224489796) equal to 1.453141479 and -1.453141479.

Subproblem 1

t + -1.224489796 = 1.453141479 Simplifying t + -1.224489796 = 1.453141479 Reorder the terms: -1.224489796 + t = 1.453141479 Solving -1.224489796 + t = 1.453141479 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.224489796' to each side of the equation. -1.224489796 + 1.224489796 + t = 1.453141479 + 1.224489796 Combine like terms: -1.224489796 + 1.224489796 = 0.000000000 0.000000000 + t = 1.453141479 + 1.224489796 t = 1.453141479 + 1.224489796 Combine like terms: 1.453141479 + 1.224489796 = 2.677631275 t = 2.677631275 Simplifying t = 2.677631275

Subproblem 2

t + -1.224489796 = -1.453141479 Simplifying t + -1.224489796 = -1.453141479 Reorder the terms: -1.224489796 + t = -1.453141479 Solving -1.224489796 + t = -1.453141479 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '1.224489796' to each side of the equation. -1.224489796 + 1.224489796 + t = -1.453141479 + 1.224489796 Combine like terms: -1.224489796 + 1.224489796 = 0.000000000 0.000000000 + t = -1.453141479 + 1.224489796 t = -1.453141479 + 1.224489796 Combine like terms: -1.453141479 + 1.224489796 = -0.228651683 t = -0.228651683 Simplifying t = -0.228651683

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.677631275, -0.228651683}

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