-6t^2+15t-3=

Solution for -6t^2+15t-3= equation:

Simplifying
-6t2 + 15t + -3 = 0

Reorder the terms:
-3 + 15t + -6t2 = 0

Solving
-3 + 15t + -6t2 = 0

Solving for variable 't'.

Factor out the Greatest Common Factor (GCF), '3'.
3(-1 + 5t + -2t2) = 0

Ignore the factor 3.
Subproblem 1
Set the factor '(-1 + 5t + -2t2)' equal to zero and attempt to solve:

Simplifying
-1 + 5t + -2t2 = 0

Solving
-1 + 5t + -2t2 = 0

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
0.5 + -2.5t + t2 = 0

Move the constant term to the right:

Add '-0.5' to each side of the equation.
0.5 + -2.5t + -0.5 + t2 = 0 + -0.5

Reorder the terms:
0.5 + -0.5 + -2.5t + t2 = 0 + -0.5

Combine like terms: 0.5 + -0.5 = 0.0
0.0 + -2.5t + t2 = 0 + -0.5
-2.5t + t2 = 0 + -0.5

Combine like terms: 0 + -0.5 = -0.5
-2.5t + t2 = -0.5

The t term is -2.5t.  Take half its coefficient (-1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
-2.5t + 1.5625 + t2 = -0.5 + 1.5625

Reorder the terms:
1.5625 + -2.5t + t2 = -0.5 + 1.5625

Combine like terms: -0.5 + 1.5625 = 1.0625
1.5625 + -2.5t + t2 = 1.0625

Factor a perfect square on the left side:
(t + -1.25)(t + -1.25) = 1.0625

Calculate the square root of the right side: 1.030776406

Break this problem into two subproblems by setting 
(t + -1.25) equal to 1.030776406 and -1.030776406.

Subproblem 1
t + -1.25 = 1.030776406

Simplifying
t + -1.25 = 1.030776406

Reorder the terms:
-1.25 + t = 1.030776406

Solving
-1.25 + t = 1.030776406

Solving for variable 't'.

Move all terms containing t to the left, all other terms to the right.

Add '1.25' to each side of the equation.
-1.25 + 1.25 + t = 1.030776406 + 1.25

Combine like terms: -1.25 + 1.25 = 0.00
0.00 + t = 1.030776406 + 1.25
t = 1.030776406 + 1.25

Combine like terms: 1.030776406 + 1.25 = 2.280776406
t = 2.280776406

Simplifying
t = 2.280776406

Subproblem 2
t + -1.25 = -1.030776406

Simplifying
t + -1.25 = -1.030776406

Reorder the terms:
-1.25 + t = -1.030776406

Solving
-1.25 + t = -1.030776406

Solving for variable 't'.

Move all terms containing t to the left, all other terms to the right.

Add '1.25' to each side of the equation.
-1.25 + 1.25 + t = -1.030776406 + 1.25

Combine like terms: -1.25 + 1.25 = 0.00
0.00 + t = -1.030776406 + 1.25
t = -1.030776406 + 1.25

Combine like terms: -1.030776406 + 1.25 = 0.219223594
t = 0.219223594

Simplifying
t = 0.219223594

Solution
The solution to the problem is based on the solutions
from the subproblems.
t = {2.280776406, 0.219223594}
Solution
t = {2.280776406, 0.219223594}