4x^2+1.52x-1.52=0

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Solution for 4x^2+1.52x-1.52=0 equation:


Simplifying
4x2 + 1.52x + -1.52 = 0

Reorder the terms:
-1.52 + 1.52x + 4x2 = 0

Solving
-1.52 + 1.52x + 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'.
-0.38 + 0.38x + x2 = 0

Move the constant term to the right:

Add '0.38' to each side of the equation.
-0.38 + 0.38x + 0.38 + x2 = 0 + 0.38

Reorder the terms:
-0.38 + 0.38 + 0.38x + x2 = 0 + 0.38

Combine like terms: -0.38 + 0.38 = 0.00
0.00 + 0.38x + x2 = 0 + 0.38
0.38x + x2 = 0 + 0.38

Combine like terms: 0 + 0.38 = 0.38
0.38x + x2 = 0.38

The x term is 0.38x.  Take half its coefficient (0.19).
Square it (0.0361) and add it to both sides.

Add '0.0361' to each side of the equation.
0.38x + 0.0361 + x2 = 0.38 + 0.0361

Reorder the terms:
0.0361 + 0.38x + x2 = 0.38 + 0.0361

Combine like terms: 0.38 + 0.0361 = 0.4161
0.0361 + 0.38x + x2 = 0.4161

Factor a perfect square on the left side:
(x + 0.19)(x + 0.19) = 0.4161

Calculate the square root of the right side: 0.645058137

Break this problem into two subproblems by setting 
(x + 0.19) equal to 0.645058137 and -0.645058137.

Subproblem 1

x + 0.19 = 0.645058137 Simplifying x + 0.19 = 0.645058137 Reorder the terms: 0.19 + x = 0.645058137 Solving 0.19 + x = 0.645058137 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.19' to each side of the equation. 0.19 + -0.19 + x = 0.645058137 + -0.19 Combine like terms: 0.19 + -0.19 = 0.00 0.00 + x = 0.645058137 + -0.19 x = 0.645058137 + -0.19 Combine like terms: 0.645058137 + -0.19 = 0.455058137 x = 0.455058137 Simplifying x = 0.455058137

Subproblem 2

x + 0.19 = -0.645058137 Simplifying x + 0.19 = -0.645058137 Reorder the terms: 0.19 + x = -0.645058137 Solving 0.19 + x = -0.645058137 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.19' to each side of the equation. 0.19 + -0.19 + x = -0.645058137 + -0.19 Combine like terms: 0.19 + -0.19 = 0.00 0.00 + x = -0.645058137 + -0.19 x = -0.645058137 + -0.19 Combine like terms: -0.645058137 + -0.19 = -0.835058137 x = -0.835058137 Simplifying x = -0.835058137

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.455058137, -0.835058137}

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