t^2-.5t-14=0

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Solution for t^2-.5t-14=0 equation:


Simplifying
t2 + -0.5t + -14 = 0

Reorder the terms:
-14 + -0.5t + t2 = 0

Solving
-14 + -0.5t + t2 = 0

Solving for variable 't'.

Begin completing the square.

Move the constant term to the right:

Add '14' to each side of the equation.
-14 + -0.5t + 14 + t2 = 0 + 14

Reorder the terms:
-14 + 14 + -0.5t + t2 = 0 + 14

Combine like terms: -14 + 14 = 0
0 + -0.5t + t2 = 0 + 14
-0.5t + t2 = 0 + 14

Combine like terms: 0 + 14 = 14
-0.5t + t2 = 14

The t term is -0.5t.  Take half its coefficient (-0.25).
Square it (0.0625) and add it to both sides.

Add '0.0625' to each side of the equation.
-0.5t + 0.0625 + t2 = 14 + 0.0625

Reorder the terms:
0.0625 + -0.5t + t2 = 14 + 0.0625

Combine like terms: 14 + 0.0625 = 14.0625
0.0625 + -0.5t + t2 = 14.0625

Factor a perfect square on the left side:
(t + -0.25)(t + -0.25) = 14.0625

Calculate the square root of the right side: 3.75

Break this problem into two subproblems by setting 
(t + -0.25) equal to 3.75 and -3.75.

Subproblem 1

t + -0.25 = 3.75 Simplifying t + -0.25 = 3.75 Reorder the terms: -0.25 + t = 3.75 Solving -0.25 + t = 3.75 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + t = 3.75 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + t = 3.75 + 0.25 t = 3.75 + 0.25 Combine like terms: 3.75 + 0.25 = 4 t = 4 Simplifying t = 4

Subproblem 2

t + -0.25 = -3.75 Simplifying t + -0.25 = -3.75 Reorder the terms: -0.25 + t = -3.75 Solving -0.25 + t = -3.75 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.25' to each side of the equation. -0.25 + 0.25 + t = -3.75 + 0.25 Combine like terms: -0.25 + 0.25 = 0.00 0.00 + t = -3.75 + 0.25 t = -3.75 + 0.25 Combine like terms: -3.75 + 0.25 = -3.5 t = -3.5 Simplifying t = -3.5

Solution

The solution to the problem is based on the solutions from the subproblems. t = {4, -3.5}

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