-3t^2+18t-4=0

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Solution for -3t^2+18t-4=0 equation:


Simplifying
-3t2 + 18t + -4 = 0

Reorder the terms:
-4 + 18t + -3t2 = 0

Solving
-4 + 18t + -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'.
1.333333333 + -6t + t2 = 0

Move the constant term to the right:

Add '-1.333333333' to each side of the equation.
1.333333333 + -6t + -1.333333333 + t2 = 0 + -1.333333333

Reorder the terms:
1.333333333 + -1.333333333 + -6t + t2 = 0 + -1.333333333

Combine like terms: 1.333333333 + -1.333333333 = 0.000000000
0.000000000 + -6t + t2 = 0 + -1.333333333
-6t + t2 = 0 + -1.333333333

Combine like terms: 0 + -1.333333333 = -1.333333333
-6t + t2 = -1.333333333

The t term is -6t.  Take half its coefficient (-3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
-6t + 9 + t2 = -1.333333333 + 9

Reorder the terms:
9 + -6t + t2 = -1.333333333 + 9

Combine like terms: -1.333333333 + 9 = 7.666666667
9 + -6t + t2 = 7.666666667

Factor a perfect square on the left side:
(t + -3)(t + -3) = 7.666666667

Calculate the square root of the right side: 2.768874621

Break this problem into two subproblems by setting 
(t + -3) equal to 2.768874621 and -2.768874621.

Subproblem 1

t + -3 = 2.768874621 Simplifying t + -3 = 2.768874621 Reorder the terms: -3 + t = 2.768874621 Solving -3 + t = 2.768874621 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + t = 2.768874621 + 3 Combine like terms: -3 + 3 = 0 0 + t = 2.768874621 + 3 t = 2.768874621 + 3 Combine like terms: 2.768874621 + 3 = 5.768874621 t = 5.768874621 Simplifying t = 5.768874621

Subproblem 2

t + -3 = -2.768874621 Simplifying t + -3 = -2.768874621 Reorder the terms: -3 + t = -2.768874621 Solving -3 + t = -2.768874621 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 3 + t = -2.768874621 + 3 Combine like terms: -3 + 3 = 0 0 + t = -2.768874621 + 3 t = -2.768874621 + 3 Combine like terms: -2.768874621 + 3 = 0.231125379 t = 0.231125379 Simplifying t = 0.231125379

Solution

The solution to the problem is based on the solutions from the subproblems. t = {5.768874621, 0.231125379}

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