t^2-6t+5-8t^2+7t=

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Solution for t^2-6t+5-8t^2+7t= equation:


Simplifying
t2 + -6t + 5 + -8t2 + 7t = 0

Reorder the terms:
5 + -6t + 7t + t2 + -8t2 = 0

Combine like terms: -6t + 7t = 1t
5 + 1t + t2 + -8t2 = 0

Combine like terms: t2 + -8t2 = -7t2
5 + 1t + -7t2 = 0

Solving
5 + 1t + -7t2 = 0

Solving for variable 't'.

Begin completing the square.  Divide all terms by
-7 the coefficient of the squared term: 

Divide each side by '-7'.
-0.7142857143 + -0.1428571429t + t2 = 0

Move the constant term to the right:

Add '0.7142857143' to each side of the equation.
-0.7142857143 + -0.1428571429t + 0.7142857143 + t2 = 0 + 0.7142857143

Reorder the terms:
-0.7142857143 + 0.7142857143 + -0.1428571429t + t2 = 0 + 0.7142857143

Combine like terms: -0.7142857143 + 0.7142857143 = 0.0000000000
0.0000000000 + -0.1428571429t + t2 = 0 + 0.7142857143
-0.1428571429t + t2 = 0 + 0.7142857143

Combine like terms: 0 + 0.7142857143 = 0.7142857143
-0.1428571429t + t2 = 0.7142857143

The t term is -0.1428571429t.  Take half its coefficient (-0.07142857145).
Square it (0.005102040819) and add it to both sides.

Add '0.005102040819' to each side of the equation.
-0.1428571429t + 0.005102040819 + t2 = 0.7142857143 + 0.005102040819

Reorder the terms:
0.005102040819 + -0.1428571429t + t2 = 0.7142857143 + 0.005102040819

Combine like terms: 0.7142857143 + 0.005102040819 = 0.719387755119
0.005102040819 + -0.1428571429t + t2 = 0.719387755119

Factor a perfect square on the left side:
(t + -0.07142857145)(t + -0.07142857145) = 0.719387755119

Calculate the square root of the right side: 0.848167292

Break this problem into two subproblems by setting 
(t + -0.07142857145) equal to 0.848167292 and -0.848167292.

Subproblem 1

t + -0.07142857145 = 0.848167292 Simplifying t + -0.07142857145 = 0.848167292 Reorder the terms: -0.07142857145 + t = 0.848167292 Solving -0.07142857145 + t = 0.848167292 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.07142857145' to each side of the equation. -0.07142857145 + 0.07142857145 + t = 0.848167292 + 0.07142857145 Combine like terms: -0.07142857145 + 0.07142857145 = 0.00000000000 0.00000000000 + t = 0.848167292 + 0.07142857145 t = 0.848167292 + 0.07142857145 Combine like terms: 0.848167292 + 0.07142857145 = 0.91959586345 t = 0.91959586345 Simplifying t = 0.91959586345

Subproblem 2

t + -0.07142857145 = -0.848167292 Simplifying t + -0.07142857145 = -0.848167292 Reorder the terms: -0.07142857145 + t = -0.848167292 Solving -0.07142857145 + t = -0.848167292 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.07142857145' to each side of the equation. -0.07142857145 + 0.07142857145 + t = -0.848167292 + 0.07142857145 Combine like terms: -0.07142857145 + 0.07142857145 = 0.00000000000 0.00000000000 + t = -0.848167292 + 0.07142857145 t = -0.848167292 + 0.07142857145 Combine like terms: -0.848167292 + 0.07142857145 = -0.77673872055 t = -0.77673872055 Simplifying t = -0.77673872055

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.91959586345, -0.77673872055}

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