8t=7+2t^2

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Solution for 8t=7+2t^2 equation:


Simplifying
8t = 7 + 2t2

Solving
8t = 7 + 2t2

Solving for variable 't'.

Reorder the terms:
-7 + 8t + -2t2 = 7 + 2t2 + -7 + -2t2

Reorder the terms:
-7 + 8t + -2t2 = 7 + -7 + 2t2 + -2t2

Combine like terms: 7 + -7 = 0
-7 + 8t + -2t2 = 0 + 2t2 + -2t2
-7 + 8t + -2t2 = 2t2 + -2t2

Combine like terms: 2t2 + -2t2 = 0
-7 + 8t + -2t2 = 0

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

Divide each side by '-2'.
3.5 + -4t + t2 = 0

Move the constant term to the right:

Add '-3.5' to each side of the equation.
3.5 + -4t + -3.5 + t2 = 0 + -3.5

Reorder the terms:
3.5 + -3.5 + -4t + t2 = 0 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 + -4t + t2 = 0 + -3.5
-4t + t2 = 0 + -3.5

Combine like terms: 0 + -3.5 = -3.5
-4t + t2 = -3.5

The t term is -4t.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4t + 4 + t2 = -3.5 + 4

Reorder the terms:
4 + -4t + t2 = -3.5 + 4

Combine like terms: -3.5 + 4 = 0.5
4 + -4t + t2 = 0.5

Factor a perfect square on the left side:
(t + -2)(t + -2) = 0.5

Calculate the square root of the right side: 0.707106781

Break this problem into two subproblems by setting 
(t + -2) equal to 0.707106781 and -0.707106781.

Subproblem 1

t + -2 = 0.707106781 Simplifying t + -2 = 0.707106781 Reorder the terms: -2 + t = 0.707106781 Solving -2 + t = 0.707106781 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + t = 0.707106781 + 2 Combine like terms: -2 + 2 = 0 0 + t = 0.707106781 + 2 t = 0.707106781 + 2 Combine like terms: 0.707106781 + 2 = 2.707106781 t = 2.707106781 Simplifying t = 2.707106781

Subproblem 2

t + -2 = -0.707106781 Simplifying t + -2 = -0.707106781 Reorder the terms: -2 + t = -0.707106781 Solving -2 + t = -0.707106781 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + t = -0.707106781 + 2 Combine like terms: -2 + 2 = 0 0 + t = -0.707106781 + 2 t = -0.707106781 + 2 Combine like terms: -0.707106781 + 2 = 1.292893219 t = 1.292893219 Simplifying t = 1.292893219

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.707106781, 1.292893219}

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