(2t+1)(t-0.75)=0

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Solution for (2t+1)(t-0.75)=0 equation:


Simplifying
(2t + 1)(t + -0.75) = 0

Reorder the terms:
(1 + 2t)(t + -0.75) = 0

Reorder the terms:
(1 + 2t)(-0.75 + t) = 0

Multiply (1 + 2t) * (-0.75 + t)
(1(-0.75 + t) + 2t * (-0.75 + t)) = 0
((-0.75 * 1 + t * 1) + 2t * (-0.75 + t)) = 0
((-0.75 + 1t) + 2t * (-0.75 + t)) = 0
(-0.75 + 1t + (-0.75 * 2t + t * 2t)) = 0
(-0.75 + 1t + (-1.5t + 2t2)) = 0

Combine like terms: 1t + -1.5t = -0.5t
(-0.75 + -0.5t + 2t2) = 0

Solving
-0.75 + -0.5t + 2t2 = 0

Solving for variable 't'.

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

Divide each side by '2'.
-0.375 + -0.25t + t2 = 0

Move the constant term to the right:

Add '0.375' to each side of the equation.
-0.375 + -0.25t + 0.375 + t2 = 0 + 0.375

Reorder the terms:
-0.375 + 0.375 + -0.25t + t2 = 0 + 0.375

Combine like terms: -0.375 + 0.375 = 0.000
0.000 + -0.25t + t2 = 0 + 0.375
-0.25t + t2 = 0 + 0.375

Combine like terms: 0 + 0.375 = 0.375
-0.25t + t2 = 0.375

The t term is -0.25t.  Take half its coefficient (-0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
-0.25t + 0.015625 + t2 = 0.375 + 0.015625

Reorder the terms:
0.015625 + -0.25t + t2 = 0.375 + 0.015625

Combine like terms: 0.375 + 0.015625 = 0.390625
0.015625 + -0.25t + t2 = 0.390625

Factor a perfect square on the left side:
(t + -0.125)(t + -0.125) = 0.390625

Calculate the square root of the right side: 0.625

Break this problem into two subproblems by setting 
(t + -0.125) equal to 0.625 and -0.625.

Subproblem 1

t + -0.125 = 0.625 Simplifying t + -0.125 = 0.625 Reorder the terms: -0.125 + t = 0.625 Solving -0.125 + t = 0.625 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + t = 0.625 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + t = 0.625 + 0.125 t = 0.625 + 0.125 Combine like terms: 0.625 + 0.125 = 0.75 t = 0.75 Simplifying t = 0.75

Subproblem 2

t + -0.125 = -0.625 Simplifying t + -0.125 = -0.625 Reorder the terms: -0.125 + t = -0.625 Solving -0.125 + t = -0.625 Solving for variable 't'. Move all terms containing t to the left, all other terms to the right. Add '0.125' to each side of the equation. -0.125 + 0.125 + t = -0.625 + 0.125 Combine like terms: -0.125 + 0.125 = 0.000 0.000 + t = -0.625 + 0.125 t = -0.625 + 0.125 Combine like terms: -0.625 + 0.125 = -0.5 t = -0.5 Simplifying t = -0.5

Solution

The solution to the problem is based on the solutions from the subproblems. t = {0.75, -0.5}

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