4x^2-.75x-.25=0

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Solution for 4x^2-.75x-.25=0 equation:


Simplifying
4x2 + -0.75x + -0.25 = 0

Reorder the terms:
-0.25 + -0.75x + 4x2 = 0

Solving
-0.25 + -0.75x + 4x2 = 0

Solving for variable 'x'.

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

Divide each side by '4'.
-0.0625 + -0.1875x + x2 = 0

Move the constant term to the right:

Add '0.0625' to each side of the equation.
-0.0625 + -0.1875x + 0.0625 + x2 = 0 + 0.0625

Reorder the terms:
-0.0625 + 0.0625 + -0.1875x + x2 = 0 + 0.0625

Combine like terms: -0.0625 + 0.0625 = 0.0000
0.0000 + -0.1875x + x2 = 0 + 0.0625
-0.1875x + x2 = 0 + 0.0625

Combine like terms: 0 + 0.0625 = 0.0625
-0.1875x + x2 = 0.0625

The x term is -0.1875x.  Take half its coefficient (-0.09375).
Square it (0.0087890625) and add it to both sides.

Add '0.0087890625' to each side of the equation.
-0.1875x + 0.0087890625 + x2 = 0.0625 + 0.0087890625

Reorder the terms:
0.0087890625 + -0.1875x + x2 = 0.0625 + 0.0087890625

Combine like terms: 0.0625 + 0.0087890625 = 0.0712890625
0.0087890625 + -0.1875x + x2 = 0.0712890625

Factor a perfect square on the left side:
(x + -0.09375)(x + -0.09375) = 0.0712890625

Calculate the square root of the right side: 0.267000117

Break this problem into two subproblems by setting 
(x + -0.09375) equal to 0.267000117 and -0.267000117.

Subproblem 1

x + -0.09375 = 0.267000117 Simplifying x + -0.09375 = 0.267000117 Reorder the terms: -0.09375 + x = 0.267000117 Solving -0.09375 + x = 0.267000117 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.09375' to each side of the equation. -0.09375 + 0.09375 + x = 0.267000117 + 0.09375 Combine like terms: -0.09375 + 0.09375 = 0.00000 0.00000 + x = 0.267000117 + 0.09375 x = 0.267000117 + 0.09375 Combine like terms: 0.267000117 + 0.09375 = 0.360750117 x = 0.360750117 Simplifying x = 0.360750117

Subproblem 2

x + -0.09375 = -0.267000117 Simplifying x + -0.09375 = -0.267000117 Reorder the terms: -0.09375 + x = -0.267000117 Solving -0.09375 + x = -0.267000117 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.09375' to each side of the equation. -0.09375 + 0.09375 + x = -0.267000117 + 0.09375 Combine like terms: -0.09375 + 0.09375 = 0.00000 0.00000 + x = -0.267000117 + 0.09375 x = -0.267000117 + 0.09375 Combine like terms: -0.267000117 + 0.09375 = -0.173250117 x = -0.173250117 Simplifying x = -0.173250117

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.360750117, -0.173250117}

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