0=t(40-3t)+16

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Solution for 0=t(40-3t)+16 equation:


Simplifying
0 = t(40 + -3t) + 16
0 = (40 * t + -3t * t) + 16
0 = (40t + -3t2) + 16

Reorder the terms:
0 = 16 + 40t + -3t2

Solving
0 = 16 + 40t + -3t2

Solving for variable 't'.

Combine like terms: 0 + -16 = -16
-16 + -40t + 3t2 = 16 + 40t + -3t2 + -16 + -40t + 3t2

Reorder the terms:
-16 + -40t + 3t2 = 16 + -16 + 40t + -40t + -3t2 + 3t2

Combine like terms: 16 + -16 = 0
-16 + -40t + 3t2 = 0 + 40t + -40t + -3t2 + 3t2
-16 + -40t + 3t2 = 40t + -40t + -3t2 + 3t2

Combine like terms: 40t + -40t = 0
-16 + -40t + 3t2 = 0 + -3t2 + 3t2
-16 + -40t + 3t2 = -3t2 + 3t2

Combine like terms: -3t2 + 3t2 = 0
-16 + -40t + 3t2 = 0

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

Divide each side by '3'.
-5.333333333 + -13.33333333t + t2 = 0

Move the constant term to the right:

Add '5.333333333' to each side of the equation.
-5.333333333 + -13.33333333t + 5.333333333 + t2 = 0 + 5.333333333

Reorder the terms:
-5.333333333 + 5.333333333 + -13.33333333t + t2 = 0 + 5.333333333

Combine like terms: -5.333333333 + 5.333333333 = 0.000000000
0.000000000 + -13.33333333t + t2 = 0 + 5.333333333
-13.33333333t + t2 = 0 + 5.333333333

Combine like terms: 0 + 5.333333333 = 5.333333333
-13.33333333t + t2 = 5.333333333

The t term is -13.33333333t.  Take half its coefficient (-6.666666665).
Square it (44.44444442) and add it to both sides.

Add '44.44444442' to each side of the equation.
-13.33333333t + 44.44444442 + t2 = 5.333333333 + 44.44444442

Reorder the terms:
44.44444442 + -13.33333333t + t2 = 5.333333333 + 44.44444442

Combine like terms: 5.333333333 + 44.44444442 = 49.777777753
44.44444442 + -13.33333333t + t2 = 49.777777753

Factor a perfect square on the left side:
(t + -6.666666665)(t + -6.666666665) = 49.777777753

Calculate the square root of the right side: 7.055336828

Break this problem into two subproblems by setting 
(t + -6.666666665) equal to 7.055336828 and -7.055336828.

Subproblem 1

t + -6.666666665 = 7.055336828 Simplifying t + -6.666666665 = 7.055336828 Reorder the terms: -6.666666665 + t = 7.055336828 Solving -6.666666665 + t = 7.055336828 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '6.666666665' to each side of the equation. -6.666666665 + 6.666666665 + t = 7.055336828 + 6.666666665 Combine like terms: -6.666666665 + 6.666666665 = 0.000000000 0.000000000 + t = 7.055336828 + 6.666666665 t = 7.055336828 + 6.666666665 Combine like terms: 7.055336828 + 6.666666665 = 13.722003493 t = 13.722003493 Simplifying t = 13.722003493

Subproblem 2

t + -6.666666665 = -7.055336828 Simplifying t + -6.666666665 = -7.055336828 Reorder the terms: -6.666666665 + t = -7.055336828 Solving -6.666666665 + t = -7.055336828 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '6.666666665' to each side of the equation. -6.666666665 + 6.666666665 + t = -7.055336828 + 6.666666665 Combine like terms: -6.666666665 + 6.666666665 = 0.000000000 0.000000000 + t = -7.055336828 + 6.666666665 t = -7.055336828 + 6.666666665 Combine like terms: -7.055336828 + 6.666666665 = -0.388670163 t = -0.388670163 Simplifying t = -0.388670163

Solution

The solution to the problem is based on the solutions from the subproblems. t = {13.722003493, -0.388670163}

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