6t^2-5.4-3.5+2.5t^2+3t=

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Solution for 6t^2-5.4-3.5+2.5t^2+3t= equation:


Simplifying
6t2 + -5.4 + -3.5 + 2.5t2 + 3t = 0

Reorder the terms:
-5.4 + -3.5 + 3t + 6t2 + 2.5t2 = 0

Combine like terms: -5.4 + -3.5 = -8.9
-8.9 + 3t + 6t2 + 2.5t2 = 0

Combine like terms: 6t2 + 2.5t2 = 8.5t2
-8.9 + 3t + 8.5t2 = 0

Solving
-8.9 + 3t + 8.5t2 = 0

Solving for variable 't'.

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

Divide each side by '8.5'.
-1.047058824 + 0.3529411765t + t2 = 0

Move the constant term to the right:

Add '1.047058824' to each side of the equation.
-1.047058824 + 0.3529411765t + 1.047058824 + t2 = 0 + 1.047058824

Reorder the terms:
-1.047058824 + 1.047058824 + 0.3529411765t + t2 = 0 + 1.047058824

Combine like terms: -1.047058824 + 1.047058824 = 0.000000000
0.000000000 + 0.3529411765t + t2 = 0 + 1.047058824
0.3529411765t + t2 = 0 + 1.047058824

Combine like terms: 0 + 1.047058824 = 1.047058824
0.3529411765t + t2 = 1.047058824

The t term is 0.3529411765t.  Take half its coefficient (0.1764705883).
Square it (0.03114186853) and add it to both sides.

Add '0.03114186853' to each side of the equation.
0.3529411765t + 0.03114186853 + t2 = 1.047058824 + 0.03114186853

Reorder the terms:
0.03114186853 + 0.3529411765t + t2 = 1.047058824 + 0.03114186853

Combine like terms: 1.047058824 + 0.03114186853 = 1.07820069253
0.03114186853 + 0.3529411765t + t2 = 1.07820069253

Factor a perfect square on the left side:
(t + 0.1764705883)(t + 0.1764705883) = 1.07820069253

Calculate the square root of the right side: 1.038364431

Break this problem into two subproblems by setting 
(t + 0.1764705883) equal to 1.038364431 and -1.038364431.

Subproblem 1

t + 0.1764705883 = 1.038364431 Simplifying t + 0.1764705883 = 1.038364431 Reorder the terms: 0.1764705883 + t = 1.038364431 Solving 0.1764705883 + t = 1.038364431 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.1764705883' to each side of the equation. 0.1764705883 + -0.1764705883 + t = 1.038364431 + -0.1764705883 Combine like terms: 0.1764705883 + -0.1764705883 = 0.0000000000 0.0000000000 + t = 1.038364431 + -0.1764705883 t = 1.038364431 + -0.1764705883 Combine like terms: 1.038364431 + -0.1764705883 = 0.8618938427 t = 0.8618938427 Simplifying t = 0.8618938427

Subproblem 2

t + 0.1764705883 = -1.038364431 Simplifying t + 0.1764705883 = -1.038364431 Reorder the terms: 0.1764705883 + t = -1.038364431 Solving 0.1764705883 + t = -1.038364431 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.1764705883' to each side of the equation. 0.1764705883 + -0.1764705883 + t = -1.038364431 + -0.1764705883 Combine like terms: 0.1764705883 + -0.1764705883 = 0.0000000000 0.0000000000 + t = -1.038364431 + -0.1764705883 t = -1.038364431 + -0.1764705883 Combine like terms: -1.038364431 + -0.1764705883 = -1.2148350193 t = -1.2148350193 Simplifying t = -1.2148350193

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.8618938427, -1.2148350193}

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