t^2+30=2(10-8t)

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Solution for t^2+30=2(10-8t) equation:


Simplifying
t2 + 30 = 2(10 + -8t)

Reorder the terms:
30 + t2 = 2(10 + -8t)
30 + t2 = (10 * 2 + -8t * 2)
30 + t2 = (20 + -16t)

Solving
30 + t2 = 20 + -16t

Solving for variable 't'.

Reorder the terms:
30 + -20 + 16t + t2 = 20 + -16t + -20 + 16t

Combine like terms: 30 + -20 = 10
10 + 16t + t2 = 20 + -16t + -20 + 16t

Reorder the terms:
10 + 16t + t2 = 20 + -20 + -16t + 16t

Combine like terms: 20 + -20 = 0
10 + 16t + t2 = 0 + -16t + 16t
10 + 16t + t2 = -16t + 16t

Combine like terms: -16t + 16t = 0
10 + 16t + t2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-10' to each side of the equation.
10 + 16t + -10 + t2 = 0 + -10

Reorder the terms:
10 + -10 + 16t + t2 = 0 + -10

Combine like terms: 10 + -10 = 0
0 + 16t + t2 = 0 + -10
16t + t2 = 0 + -10

Combine like terms: 0 + -10 = -10
16t + t2 = -10

The t term is 16t.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16t + 64 + t2 = -10 + 64

Reorder the terms:
64 + 16t + t2 = -10 + 64

Combine like terms: -10 + 64 = 54
64 + 16t + t2 = 54

Factor a perfect square on the left side:
(t + 8)(t + 8) = 54

Calculate the square root of the right side: 7.348469228

Break this problem into two subproblems by setting 
(t + 8) equal to 7.348469228 and -7.348469228.

Subproblem 1

t + 8 = 7.348469228 Simplifying t + 8 = 7.348469228 Reorder the terms: 8 + t = 7.348469228 Solving 8 + t = 7.348469228 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + t = 7.348469228 + -8 Combine like terms: 8 + -8 = 0 0 + t = 7.348469228 + -8 t = 7.348469228 + -8 Combine like terms: 7.348469228 + -8 = -0.651530772 t = -0.651530772 Simplifying t = -0.651530772

Subproblem 2

t + 8 = -7.348469228 Simplifying t + 8 = -7.348469228 Reorder the terms: 8 + t = -7.348469228 Solving 8 + t = -7.348469228 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + t = -7.348469228 + -8 Combine like terms: 8 + -8 = 0 0 + t = -7.348469228 + -8 t = -7.348469228 + -8 Combine like terms: -7.348469228 + -8 = -15.348469228 t = -15.348469228 Simplifying t = -15.348469228

Solution

The solution to the problem is based on the solutions from the subproblems. t = {-0.651530772, -15.348469228}

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