2t(2t+4)=5t+6

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Solution for 2t(2t+4)=5t+6 equation:


Simplifying
2t(2t + 4) = 5t + 6

Reorder the terms:
2t(4 + 2t) = 5t + 6
(4 * 2t + 2t * 2t) = 5t + 6
(8t + 4t2) = 5t + 6

Reorder the terms:
8t + 4t2 = 6 + 5t

Solving
8t + 4t2 = 6 + 5t

Solving for variable 't'.

Reorder the terms:
-6 + 8t + -5t + 4t2 = 6 + 5t + -6 + -5t

Combine like terms: 8t + -5t = 3t
-6 + 3t + 4t2 = 6 + 5t + -6 + -5t

Reorder the terms:
-6 + 3t + 4t2 = 6 + -6 + 5t + -5t

Combine like terms: 6 + -6 = 0
-6 + 3t + 4t2 = 0 + 5t + -5t
-6 + 3t + 4t2 = 5t + -5t

Combine like terms: 5t + -5t = 0
-6 + 3t + 4t2 = 0

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

Divide each side by '4'.
-1.5 + 0.75t + t2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + 0.75t + 1.5 + t2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + 0.75t + t2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + 0.75t + t2 = 0 + 1.5
0.75t + t2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
0.75t + t2 = 1.5

The t term is 0.75t.  Take half its coefficient (0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
0.75t + 0.140625 + t2 = 1.5 + 0.140625

Reorder the terms:
0.140625 + 0.75t + t2 = 1.5 + 0.140625

Combine like terms: 1.5 + 0.140625 = 1.640625
0.140625 + 0.75t + t2 = 1.640625

Factor a perfect square on the left side:
(t + 0.375)(t + 0.375) = 1.640625

Calculate the square root of the right side: 1.280868846

Break this problem into two subproblems by setting 
(t + 0.375) equal to 1.280868846 and -1.280868846.

Subproblem 1

t + 0.375 = 1.280868846 Simplifying t + 0.375 = 1.280868846 Reorder the terms: 0.375 + t = 1.280868846 Solving 0.375 + t = 1.280868846 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + t = 1.280868846 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + t = 1.280868846 + -0.375 t = 1.280868846 + -0.375 Combine like terms: 1.280868846 + -0.375 = 0.905868846 t = 0.905868846 Simplifying t = 0.905868846

Subproblem 2

t + 0.375 = -1.280868846 Simplifying t + 0.375 = -1.280868846 Reorder the terms: 0.375 + t = -1.280868846 Solving 0.375 + t = -1.280868846 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '-0.375' to each side of the equation. 0.375 + -0.375 + t = -1.280868846 + -0.375 Combine like terms: 0.375 + -0.375 = 0.000 0.000 + t = -1.280868846 + -0.375 t = -1.280868846 + -0.375 Combine like terms: -1.280868846 + -0.375 = -1.655868846 t = -1.655868846 Simplifying t = -1.655868846

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.905868846, -1.655868846}

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