6t+7=15-11t^2

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Solution for 6t+7=15-11t^2 equation:


Simplifying
6t + 7 = 15 + -11t2

Reorder the terms:
7 + 6t = 15 + -11t2

Solving
7 + 6t = 15 + -11t2

Solving for variable 't'.

Reorder the terms:
7 + -15 + 6t + 11t2 = 15 + -11t2 + -15 + 11t2

Combine like terms: 7 + -15 = -8
-8 + 6t + 11t2 = 15 + -11t2 + -15 + 11t2

Reorder the terms:
-8 + 6t + 11t2 = 15 + -15 + -11t2 + 11t2

Combine like terms: 15 + -15 = 0
-8 + 6t + 11t2 = 0 + -11t2 + 11t2
-8 + 6t + 11t2 = -11t2 + 11t2

Combine like terms: -11t2 + 11t2 = 0
-8 + 6t + 11t2 = 0

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

Divide each side by '11'.
-0.7272727273 + 0.5454545455t + t2 = 0

Move the constant term to the right:

Add '0.7272727273' to each side of the equation.
-0.7272727273 + 0.5454545455t + 0.7272727273 + t2 = 0 + 0.7272727273

Reorder the terms:
-0.7272727273 + 0.7272727273 + 0.5454545455t + t2 = 0 + 0.7272727273

Combine like terms: -0.7272727273 + 0.7272727273 = 0.0000000000
0.0000000000 + 0.5454545455t + t2 = 0 + 0.7272727273
0.5454545455t + t2 = 0 + 0.7272727273

Combine like terms: 0 + 0.7272727273 = 0.7272727273
0.5454545455t + t2 = 0.7272727273

The t term is 0.5454545455t.  Take half its coefficient (0.2727272728).
Square it (0.07438016533) and add it to both sides.

Add '0.07438016533' to each side of the equation.
0.5454545455t + 0.07438016533 + t2 = 0.7272727273 + 0.07438016533

Reorder the terms:
0.07438016533 + 0.5454545455t + t2 = 0.7272727273 + 0.07438016533

Combine like terms: 0.7272727273 + 0.07438016533 = 0.80165289263
0.07438016533 + 0.5454545455t + t2 = 0.80165289263

Factor a perfect square on the left side:
(t + 0.2727272728)(t + 0.2727272728) = 0.80165289263

Calculate the square root of the right side: 0.895350709

Break this problem into two subproblems by setting 
(t + 0.2727272728) equal to 0.895350709 and -0.895350709.

Subproblem 1

t + 0.2727272728 = 0.895350709 Simplifying t + 0.2727272728 = 0.895350709 Reorder the terms: 0.2727272728 + t = 0.895350709 Solving 0.2727272728 + t = 0.895350709 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.2727272728' to each side of the equation. 0.2727272728 + -0.2727272728 + t = 0.895350709 + -0.2727272728 Combine like terms: 0.2727272728 + -0.2727272728 = 0.0000000000 0.0000000000 + t = 0.895350709 + -0.2727272728 t = 0.895350709 + -0.2727272728 Combine like terms: 0.895350709 + -0.2727272728 = 0.6226234362 t = 0.6226234362 Simplifying t = 0.6226234362

Subproblem 2

t + 0.2727272728 = -0.895350709 Simplifying t + 0.2727272728 = -0.895350709 Reorder the terms: 0.2727272728 + t = -0.895350709 Solving 0.2727272728 + t = -0.895350709 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.2727272728' to each side of the equation. 0.2727272728 + -0.2727272728 + t = -0.895350709 + -0.2727272728 Combine like terms: 0.2727272728 + -0.2727272728 = 0.0000000000 0.0000000000 + t = -0.895350709 + -0.2727272728 t = -0.895350709 + -0.2727272728 Combine like terms: -0.895350709 + -0.2727272728 = -1.1680779818 t = -1.1680779818 Simplifying t = -1.1680779818

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.6226234362, -1.1680779818}

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