9t^2-t-6=0

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Solution for 9t^2-t-6=0 equation:


Simplifying
9t2 + -1t + -6 = 0

Reorder the terms:
-6 + -1t + 9t2 = 0

Solving
-6 + -1t + 9t2 = 0

Solving for variable 't'.

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

Divide each side by '9'.
-0.6666666667 + -0.1111111111t + t2 = 0

Move the constant term to the right:

Add '0.6666666667' to each side of the equation.
-0.6666666667 + -0.1111111111t + 0.6666666667 + t2 = 0 + 0.6666666667

Reorder the terms:
-0.6666666667 + 0.6666666667 + -0.1111111111t + t2 = 0 + 0.6666666667

Combine like terms: -0.6666666667 + 0.6666666667 = 0.0000000000
0.0000000000 + -0.1111111111t + t2 = 0 + 0.6666666667
-0.1111111111t + t2 = 0 + 0.6666666667

Combine like terms: 0 + 0.6666666667 = 0.6666666667
-0.1111111111t + t2 = 0.6666666667

The t term is -0.1111111111t.  Take half its coefficient (-0.05555555555).
Square it (0.003086419752) and add it to both sides.

Add '0.003086419752' to each side of the equation.
-0.1111111111t + 0.003086419752 + t2 = 0.6666666667 + 0.003086419752

Reorder the terms:
0.003086419752 + -0.1111111111t + t2 = 0.6666666667 + 0.003086419752

Combine like terms: 0.6666666667 + 0.003086419752 = 0.669753086452
0.003086419752 + -0.1111111111t + t2 = 0.669753086452

Factor a perfect square on the left side:
(t + -0.05555555555)(t + -0.05555555555) = 0.669753086452

Calculate the square root of the right side: 0.818384437

Break this problem into two subproblems by setting 
(t + -0.05555555555) equal to 0.818384437 and -0.818384437.

Subproblem 1

t + -0.05555555555 = 0.818384437 Simplifying t + -0.05555555555 = 0.818384437 Reorder the terms: -0.05555555555 + t = 0.818384437 Solving -0.05555555555 + t = 0.818384437 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.05555555555' to each side of the equation. -0.05555555555 + 0.05555555555 + t = 0.818384437 + 0.05555555555 Combine like terms: -0.05555555555 + 0.05555555555 = 0.00000000000 0.00000000000 + t = 0.818384437 + 0.05555555555 t = 0.818384437 + 0.05555555555 Combine like terms: 0.818384437 + 0.05555555555 = 0.87393999255 t = 0.87393999255 Simplifying t = 0.87393999255

Subproblem 2

t + -0.05555555555 = -0.818384437 Simplifying t + -0.05555555555 = -0.818384437 Reorder the terms: -0.05555555555 + t = -0.818384437 Solving -0.05555555555 + t = -0.818384437 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.05555555555' to each side of the equation. -0.05555555555 + 0.05555555555 + t = -0.818384437 + 0.05555555555 Combine like terms: -0.05555555555 + 0.05555555555 = 0.00000000000 0.00000000000 + t = -0.818384437 + 0.05555555555 t = -0.818384437 + 0.05555555555 Combine like terms: -0.818384437 + 0.05555555555 = -0.76282888145 t = -0.76282888145 Simplifying t = -0.76282888145

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.87393999255, -0.76282888145}

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