4.9t^2-2.89t-8.09=0

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Solution for 4.9t^2-2.89t-8.09=0 equation:


Simplifying
4.9t2 + -2.89t + -8.09 = 0

Reorder the terms:
-8.09 + -2.89t + 4.9t2 = 0

Solving
-8.09 + -2.89t + 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'.
-1.651020408 + -0.5897959184t + t2 = 0

Move the constant term to the right:

Add '1.651020408' to each side of the equation.
-1.651020408 + -0.5897959184t + 1.651020408 + t2 = 0 + 1.651020408

Reorder the terms:
-1.651020408 + 1.651020408 + -0.5897959184t + t2 = 0 + 1.651020408

Combine like terms: -1.651020408 + 1.651020408 = 0.000000000
0.000000000 + -0.5897959184t + t2 = 0 + 1.651020408
-0.5897959184t + t2 = 0 + 1.651020408

Combine like terms: 0 + 1.651020408 = 1.651020408
-0.5897959184t + t2 = 1.651020408

The t term is -0.5897959184t.  Take half its coefficient (-0.2948979592).
Square it (0.08696480634) and add it to both sides.

Add '0.08696480634' to each side of the equation.
-0.5897959184t + 0.08696480634 + t2 = 1.651020408 + 0.08696480634

Reorder the terms:
0.08696480634 + -0.5897959184t + t2 = 1.651020408 + 0.08696480634

Combine like terms: 1.651020408 + 0.08696480634 = 1.73798521434
0.08696480634 + -0.5897959184t + t2 = 1.73798521434

Factor a perfect square on the left side:
(t + -0.2948979592)(t + -0.2948979592) = 1.73798521434

Calculate the square root of the right side: 1.318326672

Break this problem into two subproblems by setting 
(t + -0.2948979592) equal to 1.318326672 and -1.318326672.

Subproblem 1

t + -0.2948979592 = 1.318326672 Simplifying t + -0.2948979592 = 1.318326672 Reorder the terms: -0.2948979592 + t = 1.318326672 Solving -0.2948979592 + t = 1.318326672 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.2948979592' to each side of the equation. -0.2948979592 + 0.2948979592 + t = 1.318326672 + 0.2948979592 Combine like terms: -0.2948979592 + 0.2948979592 = 0.0000000000 0.0000000000 + t = 1.318326672 + 0.2948979592 t = 1.318326672 + 0.2948979592 Combine like terms: 1.318326672 + 0.2948979592 = 1.6132246312 t = 1.6132246312 Simplifying t = 1.6132246312

Subproblem 2

t + -0.2948979592 = -1.318326672 Simplifying t + -0.2948979592 = -1.318326672 Reorder the terms: -0.2948979592 + t = -1.318326672 Solving -0.2948979592 + t = -1.318326672 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.2948979592' to each side of the equation. -0.2948979592 + 0.2948979592 + t = -1.318326672 + 0.2948979592 Combine like terms: -0.2948979592 + 0.2948979592 = 0.0000000000 0.0000000000 + t = -1.318326672 + 0.2948979592 t = -1.318326672 + 0.2948979592 Combine like terms: -1.318326672 + 0.2948979592 = -1.0234287128 t = -1.0234287128 Simplifying t = -1.0234287128

Solution

The solution to the problem is based on the solutions from the subproblems. t = {1.6132246312, -1.0234287128}

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