0.25t^2-4.556t-7.7452=0

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Solution for 0.25t^2-4.556t-7.7452=0 equation:


Simplifying
0.25t2 + -4.556t + -7.7452 = 0

Reorder the terms:
-7.7452 + -4.556t + 0.25t2 = 0

Solving
-7.7452 + -4.556t + 0.25t2 = 0

Solving for variable 't'.

Begin completing the square.  Divide all terms by
0.25 the coefficient of the squared term: 

Divide each side by '0.25'.
-30.9808 + -18.224t + t2 = 0

Move the constant term to the right:

Add '30.9808' to each side of the equation.
-30.9808 + -18.224t + 30.9808 + t2 = 0 + 30.9808

Reorder the terms:
-30.9808 + 30.9808 + -18.224t + t2 = 0 + 30.9808

Combine like terms: -30.9808 + 30.9808 = 0.0000
0.0000 + -18.224t + t2 = 0 + 30.9808
-18.224t + t2 = 0 + 30.9808

Combine like terms: 0 + 30.9808 = 30.9808
-18.224t + t2 = 30.9808

The t term is -18.224t.  Take half its coefficient (-9.112).
Square it (83.028544) and add it to both sides.

Add '83.028544' to each side of the equation.
-18.224t + 83.028544 + t2 = 30.9808 + 83.028544

Reorder the terms:
83.028544 + -18.224t + t2 = 30.9808 + 83.028544

Combine like terms: 30.9808 + 83.028544 = 114.009344
83.028544 + -18.224t + t2 = 114.009344

Factor a perfect square on the left side:
(t + -9.112)(t + -9.112) = 114.009344

Calculate the square root of the right side: 10.677515816

Break this problem into two subproblems by setting 
(t + -9.112) equal to 10.677515816 and -10.677515816.

Subproblem 1

t + -9.112 = 10.677515816 Simplifying t + -9.112 = 10.677515816 Reorder the terms: -9.112 + t = 10.677515816 Solving -9.112 + t = 10.677515816 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '9.112' to each side of the equation. -9.112 + 9.112 + t = 10.677515816 + 9.112 Combine like terms: -9.112 + 9.112 = 0.000 0.000 + t = 10.677515816 + 9.112 t = 10.677515816 + 9.112 Combine like terms: 10.677515816 + 9.112 = 19.789515816 t = 19.789515816 Simplifying t = 19.789515816

Subproblem 2

t + -9.112 = -10.677515816 Simplifying t + -9.112 = -10.677515816 Reorder the terms: -9.112 + t = -10.677515816 Solving -9.112 + t = -10.677515816 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '9.112' to each side of the equation. -9.112 + 9.112 + t = -10.677515816 + 9.112 Combine like terms: -9.112 + 9.112 = 0.000 0.000 + t = -10.677515816 + 9.112 t = -10.677515816 + 9.112 Combine like terms: -10.677515816 + 9.112 = -1.565515816 t = -1.565515816 Simplifying t = -1.565515816

Solution

The solution to the problem is based on the solutions from the subproblems. t = {19.789515816, -1.565515816}

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