12t^2+9t=1

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Solution for 12t^2+9t=1 equation:


Simplifying
12t2 + 9t = 1

Reorder the terms:
9t + 12t2 = 1

Solving
9t + 12t2 = 1

Solving for variable 't'.

Reorder the terms:
-1 + 9t + 12t2 = 1 + -1

Combine like terms: 1 + -1 = 0
-1 + 9t + 12t2 = 0

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

Divide each side by '12'.
-0.08333333333 + 0.75t + t2 = 0

Move the constant term to the right:

Add '0.08333333333' to each side of the equation.
-0.08333333333 + 0.75t + 0.08333333333 + t2 = 0 + 0.08333333333

Reorder the terms:
-0.08333333333 + 0.08333333333 + 0.75t + t2 = 0 + 0.08333333333

Combine like terms: -0.08333333333 + 0.08333333333 = 0.00000000000
0.00000000000 + 0.75t + t2 = 0 + 0.08333333333
0.75t + t2 = 0 + 0.08333333333

Combine like terms: 0 + 0.08333333333 = 0.08333333333
0.75t + t2 = 0.08333333333

The t term is 0.75t.  Take half its coefficient (0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
0.75t + 0.140625 + t2 = 0.08333333333 + 0.140625

Reorder the terms:
0.140625 + 0.75t + t2 = 0.08333333333 + 0.140625

Combine like terms: 0.08333333333 + 0.140625 = 0.22395833333
0.140625 + 0.75t + t2 = 0.22395833333

Factor a perfect square on the left side:
(t + 0.375)(t + 0.375) = 0.22395833333

Calculate the square root of the right side: 0.473242362

Break this problem into two subproblems by setting 
(t + 0.375) equal to 0.473242362 and -0.473242362.

Subproblem 1

t + 0.375 = 0.473242362 Simplifying t + 0.375 = 0.473242362 Reorder the terms: 0.375 + t = 0.473242362 Solving 0.375 + t = 0.473242362 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + t = 0.473242362 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + t = 0.473242362 + -0.375 t = 0.473242362 + -0.375 Combine like terms: 0.473242362 + -0.375 = 0.098242362 t = 0.098242362 Simplifying t = 0.098242362

Subproblem 2

t + 0.375 = -0.473242362 Simplifying t + 0.375 = -0.473242362 Reorder the terms: 0.375 + t = -0.473242362 Solving 0.375 + t = -0.473242362 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + t = -0.473242362 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + t = -0.473242362 + -0.375 t = -0.473242362 + -0.375 Combine like terms: -0.473242362 + -0.375 = -0.848242362 t = -0.848242362 Simplifying t = -0.848242362

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.098242362, -0.848242362}

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