3t^2-12t+9=1

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Solution for 3t^2-12t+9=1 equation:


Simplifying
3t2 + -12t + 9 = 1

Reorder the terms:
9 + -12t + 3t2 = 1

Solving
9 + -12t + 3t2 = 1

Solving for variable 't'.

Reorder the terms:
9 + -1 + -12t + 3t2 = 1 + -1

Combine like terms: 9 + -1 = 8
8 + -12t + 3t2 = 1 + -1

Combine like terms: 1 + -1 = 0
8 + -12t + 3t2 = 0

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

Divide each side by '3'.
2.666666667 + -4t + t2 = 0

Move the constant term to the right:

Add '-2.666666667' to each side of the equation.
2.666666667 + -4t + -2.666666667 + t2 = 0 + -2.666666667

Reorder the terms:
2.666666667 + -2.666666667 + -4t + t2 = 0 + -2.666666667

Combine like terms: 2.666666667 + -2.666666667 = 0.000000000
0.000000000 + -4t + t2 = 0 + -2.666666667
-4t + t2 = 0 + -2.666666667

Combine like terms: 0 + -2.666666667 = -2.666666667
-4t + t2 = -2.666666667

The t term is -4t.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4t + 4 + t2 = -2.666666667 + 4

Reorder the terms:
4 + -4t + t2 = -2.666666667 + 4

Combine like terms: -2.666666667 + 4 = 1.333333333
4 + -4t + t2 = 1.333333333

Factor a perfect square on the left side:
(t + -2)(t + -2) = 1.333333333

Calculate the square root of the right side: 1.154700538

Break this problem into two subproblems by setting 
(t + -2) equal to 1.154700538 and -1.154700538.

Subproblem 1

t + -2 = 1.154700538 Simplifying t + -2 = 1.154700538 Reorder the terms: -2 + t = 1.154700538 Solving -2 + t = 1.154700538 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + t = 1.154700538 + 2 Combine like terms: -2 + 2 = 0 0 + t = 1.154700538 + 2 t = 1.154700538 + 2 Combine like terms: 1.154700538 + 2 = 3.154700538 t = 3.154700538 Simplifying t = 3.154700538

Subproblem 2

t + -2 = -1.154700538 Simplifying t + -2 = -1.154700538 Reorder the terms: -2 + t = -1.154700538 Solving -2 + t = -1.154700538 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + t = -1.154700538 + 2 Combine like terms: -2 + 2 = 0 0 + t = -1.154700538 + 2 t = -1.154700538 + 2 Combine like terms: -1.154700538 + 2 = 0.845299462 t = 0.845299462 Simplifying t = 0.845299462

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.154700538, 0.845299462}

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