-4t(t-1)+6t=4t-9

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Solution for -4t(t-1)+6t=4t-9 equation:


Simplifying
-4t(t + -1) + 6t = 4t + -9

Reorder the terms:
-4t(-1 + t) + 6t = 4t + -9
(-1 * -4t + t * -4t) + 6t = 4t + -9
(4t + -4t2) + 6t = 4t + -9

Reorder the terms:
4t + 6t + -4t2 = 4t + -9

Combine like terms: 4t + 6t = 10t
10t + -4t2 = 4t + -9

Reorder the terms:
10t + -4t2 = -9 + 4t

Solving
10t + -4t2 = -9 + 4t

Solving for variable 't'.

Reorder the terms:
9 + 10t + -4t + -4t2 = -9 + 4t + 9 + -4t

Combine like terms: 10t + -4t = 6t
9 + 6t + -4t2 = -9 + 4t + 9 + -4t

Reorder the terms:
9 + 6t + -4t2 = -9 + 9 + 4t + -4t

Combine like terms: -9 + 9 = 0
9 + 6t + -4t2 = 0 + 4t + -4t
9 + 6t + -4t2 = 4t + -4t

Combine like terms: 4t + -4t = 0
9 + 6t + -4t2 = 0

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

Divide each side by '-4'.
-2.25 + -1.5t + t2 = 0

Move the constant term to the right:

Add '2.25' to each side of the equation.
-2.25 + -1.5t + 2.25 + t2 = 0 + 2.25

Reorder the terms:
-2.25 + 2.25 + -1.5t + t2 = 0 + 2.25

Combine like terms: -2.25 + 2.25 = 0.00
0.00 + -1.5t + t2 = 0 + 2.25
-1.5t + t2 = 0 + 2.25

Combine like terms: 0 + 2.25 = 2.25
-1.5t + t2 = 2.25

The t term is -1.5t.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5t + 0.5625 + t2 = 2.25 + 0.5625

Reorder the terms:
0.5625 + -1.5t + t2 = 2.25 + 0.5625

Combine like terms: 2.25 + 0.5625 = 2.8125
0.5625 + -1.5t + t2 = 2.8125

Factor a perfect square on the left side:
(t + -0.75)(t + -0.75) = 2.8125

Calculate the square root of the right side: 1.677050983

Break this problem into two subproblems by setting 
(t + -0.75) equal to 1.677050983 and -1.677050983.

Subproblem 1

t + -0.75 = 1.677050983 Simplifying t + -0.75 = 1.677050983 Reorder the terms: -0.75 + t = 1.677050983 Solving -0.75 + t = 1.677050983 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + t = 1.677050983 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + t = 1.677050983 + 0.75 t = 1.677050983 + 0.75 Combine like terms: 1.677050983 + 0.75 = 2.427050983 t = 2.427050983 Simplifying t = 2.427050983

Subproblem 2

t + -0.75 = -1.677050983 Simplifying t + -0.75 = -1.677050983 Reorder the terms: -0.75 + t = -1.677050983 Solving -0.75 + t = -1.677050983 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + t = -1.677050983 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + t = -1.677050983 + 0.75 t = -1.677050983 + 0.75 Combine like terms: -1.677050983 + 0.75 = -0.927050983 t = -0.927050983 Simplifying t = -0.927050983

Solution

The solution to the problem is based on the solutions from the subproblems. t = {2.427050983, -0.927050983}

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