123(5)=16t^2+123t

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Solution for 123(5)=16t^2+123t equation:


Simplifying
123(5) = 16t2 + 123t

Multiply 123 * 5
615 = 16t2 + 123t

Reorder the terms:
615 = 123t + 16t2

Solving
615 = 123t + 16t2

Solving for variable 't'.

Reorder the terms:
615 + -123t + -16t2 = 123t + -123t + 16t2 + -16t2

Combine like terms: 123t + -123t = 0
615 + -123t + -16t2 = 0 + 16t2 + -16t2
615 + -123t + -16t2 = 16t2 + -16t2

Combine like terms: 16t2 + -16t2 = 0
615 + -123t + -16t2 = 0

Begin completing the square.  Divide all terms by
-16 the coefficient of the squared term: 

Divide each side by '-16'.
-38.4375 + 7.6875t + t2 = 0

Move the constant term to the right:

Add '38.4375' to each side of the equation.
-38.4375 + 7.6875t + 38.4375 + t2 = 0 + 38.4375

Reorder the terms:
-38.4375 + 38.4375 + 7.6875t + t2 = 0 + 38.4375

Combine like terms: -38.4375 + 38.4375 = 0.0000
0.0000 + 7.6875t + t2 = 0 + 38.4375
7.6875t + t2 = 0 + 38.4375

Combine like terms: 0 + 38.4375 = 38.4375
7.6875t + t2 = 38.4375

The t term is 7.6875t.  Take half its coefficient (3.84375).
Square it (14.77441406) and add it to both sides.

Add '14.77441406' to each side of the equation.
7.6875t + 14.77441406 + t2 = 38.4375 + 14.77441406

Reorder the terms:
14.77441406 + 7.6875t + t2 = 38.4375 + 14.77441406

Combine like terms: 38.4375 + 14.77441406 = 53.21191406
14.77441406 + 7.6875t + t2 = 53.21191406

Factor a perfect square on the left side:
(t + 3.84375)(t + 3.84375) = 53.21191406

Calculate the square root of the right side: 7.294649687

Break this problem into two subproblems by setting 
(t + 3.84375) equal to 7.294649687 and -7.294649687.

Subproblem 1

t + 3.84375 = 7.294649687 Simplifying t + 3.84375 = 7.294649687 Reorder the terms: 3.84375 + t = 7.294649687 Solving 3.84375 + t = 7.294649687 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-3.84375' to each side of the equation. 3.84375 + -3.84375 + t = 7.294649687 + -3.84375 Combine like terms: 3.84375 + -3.84375 = 0.00000 0.00000 + t = 7.294649687 + -3.84375 t = 7.294649687 + -3.84375 Combine like terms: 7.294649687 + -3.84375 = 3.450899687 t = 3.450899687 Simplifying t = 3.450899687

Subproblem 2

t + 3.84375 = -7.294649687 Simplifying t + 3.84375 = -7.294649687 Reorder the terms: 3.84375 + t = -7.294649687 Solving 3.84375 + t = -7.294649687 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-3.84375' to each side of the equation. 3.84375 + -3.84375 + t = -7.294649687 + -3.84375 Combine like terms: 3.84375 + -3.84375 = 0.00000 0.00000 + t = -7.294649687 + -3.84375 t = -7.294649687 + -3.84375 Combine like terms: -7.294649687 + -3.84375 = -11.138399687 t = -11.138399687 Simplifying t = -11.138399687

Solution

The solution to the problem is based on the solutions from the subproblems. t = {3.450899687, -11.138399687}

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