7t^2+t-0.25=0

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Solution for 7t^2+t-0.25=0 equation:


Simplifying
7t2 + t + -0.25 = 0

Reorder the terms:
-0.25 + t + 7t2 = 0

Solving
-0.25 + t + 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'.
-0.03571428571 + 0.1428571429t + t2 = 0

Move the constant term to the right:

Add '0.03571428571' to each side of the equation.
-0.03571428571 + 0.1428571429t + 0.03571428571 + t2 = 0 + 0.03571428571

Reorder the terms:
-0.03571428571 + 0.03571428571 + 0.1428571429t + t2 = 0 + 0.03571428571

Combine like terms: -0.03571428571 + 0.03571428571 = 0.00000000000
0.00000000000 + 0.1428571429t + t2 = 0 + 0.03571428571
0.1428571429t + t2 = 0 + 0.03571428571

Combine like terms: 0 + 0.03571428571 = 0.03571428571
0.1428571429t + t2 = 0.03571428571

The t term is t.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
0.1428571429t + 0.25 + t2 = 0.03571428571 + 0.25

Reorder the terms:
0.25 + 0.1428571429t + t2 = 0.03571428571 + 0.25

Combine like terms: 0.03571428571 + 0.25 = 0.28571428571
0.25 + 0.1428571429t + t2 = 0.28571428571

Factor a perfect square on the left side:
(t + 0.5)(t + 0.5) = 0.28571428571

Calculate the square root of the right side: 0.534522484

Break this problem into two subproblems by setting 
(t + 0.5) equal to 0.534522484 and -0.534522484.

Subproblem 1

t + 0.5 = 0.534522484 Simplifying t + 0.5 = 0.534522484 Reorder the terms: 0.5 + t = 0.534522484 Solving 0.5 + t = 0.534522484 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + t = 0.534522484 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + t = 0.534522484 + -0.5 t = 0.534522484 + -0.5 Combine like terms: 0.534522484 + -0.5 = 0.034522484 t = 0.034522484 Simplifying t = 0.034522484

Subproblem 2

t + 0.5 = -0.534522484 Simplifying t + 0.5 = -0.534522484 Reorder the terms: 0.5 + t = -0.534522484 Solving 0.5 + t = -0.534522484 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + t = -0.534522484 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + t = -0.534522484 + -0.5 t = -0.534522484 + -0.5 Combine like terms: -0.534522484 + -0.5 = -1.034522484 t = -1.034522484 Simplifying t = -1.034522484

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.034522484, -1.034522484}

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