0=-4.8t^2+6t+8

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Solution for 0=-4.8t^2+6t+8 equation:


Simplifying
0 = -4.8t2 + 6t + 8

Reorder the terms:
0 = 8 + 6t + -4.8t2

Solving
0 = 8 + 6t + -4.8t2

Solving for variable 't'.

Combine like terms: 0 + -8 = -8
-8 + -6t + 4.8t2 = 8 + 6t + -4.8t2 + -8 + -6t + 4.8t2

Reorder the terms:
-8 + -6t + 4.8t2 = 8 + -8 + 6t + -6t + -4.8t2 + 4.8t2

Combine like terms: 8 + -8 = 0
-8 + -6t + 4.8t2 = 0 + 6t + -6t + -4.8t2 + 4.8t2
-8 + -6t + 4.8t2 = 6t + -6t + -4.8t2 + 4.8t2

Combine like terms: 6t + -6t = 0
-8 + -6t + 4.8t2 = 0 + -4.8t2 + 4.8t2
-8 + -6t + 4.8t2 = -4.8t2 + 4.8t2

Combine like terms: -4.8t2 + 4.8t2 = 0.0
-8 + -6t + 4.8t2 = 0.0

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

Divide each side by '4.8'.
-1.666666667 + -1.25t + t2 = 0

Move the constant term to the right:

Add '1.666666667' to each side of the equation.
-1.666666667 + -1.25t + 1.666666667 + t2 = 0 + 1.666666667

Reorder the terms:
-1.666666667 + 1.666666667 + -1.25t + t2 = 0 + 1.666666667

Combine like terms: -1.666666667 + 1.666666667 = 0.000000000
0.000000000 + -1.25t + t2 = 0 + 1.666666667
-1.25t + t2 = 0 + 1.666666667

Combine like terms: 0 + 1.666666667 = 1.666666667
-1.25t + t2 = 1.666666667

The t term is -1.25t.  Take half its coefficient (-0.625).
Square it (0.390625) and add it to both sides.

Add '0.390625' to each side of the equation.
-1.25t + 0.390625 + t2 = 1.666666667 + 0.390625

Reorder the terms:
0.390625 + -1.25t + t2 = 1.666666667 + 0.390625

Combine like terms: 1.666666667 + 0.390625 = 2.057291667
0.390625 + -1.25t + t2 = 2.057291667

Factor a perfect square on the left side:
(t + -0.625)(t + -0.625) = 2.057291667

Calculate the square root of the right side: 1.434326207

Break this problem into two subproblems by setting 
(t + -0.625) equal to 1.434326207 and -1.434326207.

Subproblem 1

t + -0.625 = 1.434326207 Simplifying t + -0.625 = 1.434326207 Reorder the terms: -0.625 + t = 1.434326207 Solving -0.625 + t = 1.434326207 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + t = 1.434326207 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + t = 1.434326207 + 0.625 t = 1.434326207 + 0.625 Combine like terms: 1.434326207 + 0.625 = 2.059326207 t = 2.059326207 Simplifying t = 2.059326207

Subproblem 2

t + -0.625 = -1.434326207 Simplifying t + -0.625 = -1.434326207 Reorder the terms: -0.625 + t = -1.434326207 Solving -0.625 + t = -1.434326207 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.625' to each side of the equation. -0.625 + 0.625 + t = -1.434326207 + 0.625 Combine like terms: -0.625 + 0.625 = 0.000 0.000 + t = -1.434326207 + 0.625 t = -1.434326207 + 0.625 Combine like terms: -1.434326207 + 0.625 = -0.809326207 t = -0.809326207 Simplifying t = -0.809326207

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.059326207, -0.809326207}

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