x^2+0.04x-1.47=0

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Solution for x^2+0.04x-1.47=0 equation:


Simplifying
x2 + 0.04x + -1.47 = 0

Reorder the terms:
-1.47 + 0.04x + x2 = 0

Solving
-1.47 + 0.04x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '1.47' to each side of the equation.
-1.47 + 0.04x + 1.47 + x2 = 0 + 1.47

Reorder the terms:
-1.47 + 1.47 + 0.04x + x2 = 0 + 1.47

Combine like terms: -1.47 + 1.47 = 0.00
0.00 + 0.04x + x2 = 0 + 1.47
0.04x + x2 = 0 + 1.47

Combine like terms: 0 + 1.47 = 1.47
0.04x + x2 = 1.47

The x term is 0.04x.  Take half its coefficient (0.02).
Square it (0.0004) and add it to both sides.

Add '0.0004' to each side of the equation.
0.04x + 0.0004 + x2 = 1.47 + 0.0004

Reorder the terms:
0.0004 + 0.04x + x2 = 1.47 + 0.0004

Combine like terms: 1.47 + 0.0004 = 1.4704
0.0004 + 0.04x + x2 = 1.4704

Factor a perfect square on the left side:
(x + 0.02)(x + 0.02) = 1.4704

Calculate the square root of the right side: 1.212600511

Break this problem into two subproblems by setting 
(x + 0.02) equal to 1.212600511 and -1.212600511.

Subproblem 1

x + 0.02 = 1.212600511 Simplifying x + 0.02 = 1.212600511 Reorder the terms: 0.02 + x = 1.212600511 Solving 0.02 + x = 1.212600511 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.02' to each side of the equation. 0.02 + -0.02 + x = 1.212600511 + -0.02 Combine like terms: 0.02 + -0.02 = 0.00 0.00 + x = 1.212600511 + -0.02 x = 1.212600511 + -0.02 Combine like terms: 1.212600511 + -0.02 = 1.192600511 x = 1.192600511 Simplifying x = 1.192600511

Subproblem 2

x + 0.02 = -1.212600511 Simplifying x + 0.02 = -1.212600511 Reorder the terms: 0.02 + x = -1.212600511 Solving 0.02 + x = -1.212600511 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.02' to each side of the equation. 0.02 + -0.02 + x = -1.212600511 + -0.02 Combine like terms: 0.02 + -0.02 = 0.00 0.00 + x = -1.212600511 + -0.02 x = -1.212600511 + -0.02 Combine like terms: -1.212600511 + -0.02 = -1.232600511 x = -1.232600511 Simplifying x = -1.232600511

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.192600511, -1.232600511}

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