t^2-4=6t+8

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Solution for t^2-4=6t+8 equation:


Simplifying
t2 + -4 = 6t + 8

Reorder the terms:
-4 + t2 = 6t + 8

Reorder the terms:
-4 + t2 = 8 + 6t

Solving
-4 + t2 = 8 + 6t

Solving for variable 't'.

Reorder the terms:
-4 + -8 + -6t + t2 = 8 + 6t + -8 + -6t

Combine like terms: -4 + -8 = -12
-12 + -6t + t2 = 8 + 6t + -8 + -6t

Reorder the terms:
-12 + -6t + t2 = 8 + -8 + 6t + -6t

Combine like terms: 8 + -8 = 0
-12 + -6t + t2 = 0 + 6t + -6t
-12 + -6t + t2 = 6t + -6t

Combine like terms: 6t + -6t = 0
-12 + -6t + t2 = 0

Begin completing the square.

Move the constant term to the right:

Add '12' to each side of the equation.
-12 + -6t + 12 + t2 = 0 + 12

Reorder the terms:
-12 + 12 + -6t + t2 = 0 + 12

Combine like terms: -12 + 12 = 0
0 + -6t + t2 = 0 + 12
-6t + t2 = 0 + 12

Combine like terms: 0 + 12 = 12
-6t + t2 = 12

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 = 12 + 9

Reorder the terms:
9 + -6t + t2 = 12 + 9

Combine like terms: 12 + 9 = 21
9 + -6t + t2 = 21

Factor a perfect square on the left side:
(t + -3)(t + -3) = 21

Calculate the square root of the right side: 4.582575695

Break this problem into two subproblems by setting 
(t + -3) equal to 4.582575695 and -4.582575695.

Subproblem 1

t + -3 = 4.582575695 Simplifying t + -3 = 4.582575695 Reorder the terms: -3 + t = 4.582575695 Solving -3 + t = 4.582575695 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 = 4.582575695 + 3 Combine like terms: -3 + 3 = 0 0 + t = 4.582575695 + 3 t = 4.582575695 + 3 Combine like terms: 4.582575695 + 3 = 7.582575695 t = 7.582575695 Simplifying t = 7.582575695

Subproblem 2

t + -3 = -4.582575695 Simplifying t + -3 = -4.582575695 Reorder the terms: -3 + t = -4.582575695 Solving -3 + t = -4.582575695 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 = -4.582575695 + 3 Combine like terms: -3 + 3 = 0 0 + t = -4.582575695 + 3 t = -4.582575695 + 3 Combine like terms: -4.582575695 + 3 = -1.582575695 t = -1.582575695 Simplifying t = -1.582575695

Solution

The solution to the problem is based on the solutions from the subproblems. t = {7.582575695, -1.582575695}

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