-2t^2-14t+3=0

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Solution for -2t^2-14t+3=0 equation:


Simplifying
-2t2 + -14t + 3 = 0

Reorder the terms:
3 + -14t + -2t2 = 0

Solving
3 + -14t + -2t2 = 0

Solving for variable 't'.

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

Divide each side by '-2'.
-1.5 + 7t + t2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + 7t + 1.5 + t2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + 7t + t2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + 7t + t2 = 0 + 1.5
7t + t2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
7t + t2 = 1.5

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 = 1.5 + 12.25

Reorder the terms:
12.25 + 7t + t2 = 1.5 + 12.25

Combine like terms: 1.5 + 12.25 = 13.75
12.25 + 7t + t2 = 13.75

Factor a perfect square on the left side:
(t + 3.5)(t + 3.5) = 13.75

Calculate the square root of the right side: 3.708099244

Break this problem into two subproblems by setting 
(t + 3.5) equal to 3.708099244 and -3.708099244.

Subproblem 1

t + 3.5 = 3.708099244 Simplifying t + 3.5 = 3.708099244 Reorder the terms: 3.5 + t = 3.708099244 Solving 3.5 + t = 3.708099244 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 = 3.708099244 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + t = 3.708099244 + -3.5 t = 3.708099244 + -3.5 Combine like terms: 3.708099244 + -3.5 = 0.208099244 t = 0.208099244 Simplifying t = 0.208099244

Subproblem 2

t + 3.5 = -3.708099244 Simplifying t + 3.5 = -3.708099244 Reorder the terms: 3.5 + t = -3.708099244 Solving 3.5 + t = -3.708099244 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 = -3.708099244 + -3.5 Combine like terms: 3.5 + -3.5 = 0.0 0.0 + t = -3.708099244 + -3.5 t = -3.708099244 + -3.5 Combine like terms: -3.708099244 + -3.5 = -7.208099244 t = -7.208099244 Simplifying t = -7.208099244

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.208099244, -7.208099244}

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