3t^2-21t+29=0

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Solution for 3t^2-21t+29=0 equation:


Simplifying
3t2 + -21t + 29 = 0

Reorder the terms:
29 + -21t + 3t2 = 0

Solving
29 + -21t + 3t2 = 0

Solving for variable 't'.

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

Divide each side by '3'.
9.666666667 + -7t + t2 = 0

Move the constant term to the right:

Add '-9.666666667' to each side of the equation.
9.666666667 + -7t + -9.666666667 + t2 = 0 + -9.666666667

Reorder the terms:
9.666666667 + -9.666666667 + -7t + t2 = 0 + -9.666666667

Combine like terms: 9.666666667 + -9.666666667 = 0.000000000
0.000000000 + -7t + t2 = 0 + -9.666666667
-7t + t2 = 0 + -9.666666667

Combine like terms: 0 + -9.666666667 = -9.666666667
-7t + t2 = -9.666666667

The t term is -7t.  Take half its coefficient (-3.5).
Square it (12.25) and add it to both sides.

Add '12.25' to each side of the equation.
-7t + 12.25 + t2 = -9.666666667 + 12.25

Reorder the terms:
12.25 + -7t + t2 = -9.666666667 + 12.25

Combine like terms: -9.666666667 + 12.25 = 2.583333333
12.25 + -7t + t2 = 2.583333333

Factor a perfect square on the left side:
(t + -3.5)(t + -3.5) = 2.583333333

Calculate the square root of the right side: 1.607275127

Break this problem into two subproblems by setting 
(t + -3.5) equal to 1.607275127 and -1.607275127.

Subproblem 1

t + -3.5 = 1.607275127 Simplifying t + -3.5 = 1.607275127 Reorder the terms: -3.5 + t = 1.607275127 Solving -3.5 + t = 1.607275127 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + t = 1.607275127 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + t = 1.607275127 + 3.5 t = 1.607275127 + 3.5 Combine like terms: 1.607275127 + 3.5 = 5.107275127 t = 5.107275127 Simplifying t = 5.107275127

Subproblem 2

t + -3.5 = -1.607275127 Simplifying t + -3.5 = -1.607275127 Reorder the terms: -3.5 + t = -1.607275127 Solving -3.5 + t = -1.607275127 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3.5' to each side of the equation. -3.5 + 3.5 + t = -1.607275127 + 3.5 Combine like terms: -3.5 + 3.5 = 0.0 0.0 + t = -1.607275127 + 3.5 t = -1.607275127 + 3.5 Combine like terms: -1.607275127 + 3.5 = 1.892724873 t = 1.892724873 Simplifying t = 1.892724873

Solution

The solution to the problem is based on the solutions from the subproblems. t = {5.107275127, 1.892724873}

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