x^2+.03x-1.72=0

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Solution for x^2+.03x-1.72=0 equation:


Simplifying
x2 + 0.03x + -1.72 = 0

Reorder the terms:
-1.72 + 0.03x + x2 = 0

Solving
-1.72 + 0.03x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '1.72' to each side of the equation.
-1.72 + 0.03x + 1.72 + x2 = 0 + 1.72

Reorder the terms:
-1.72 + 1.72 + 0.03x + x2 = 0 + 1.72

Combine like terms: -1.72 + 1.72 = 0.00
0.00 + 0.03x + x2 = 0 + 1.72
0.03x + x2 = 0 + 1.72

Combine like terms: 0 + 1.72 = 1.72
0.03x + x2 = 1.72

The x term is 0.03x.  Take half its coefficient (0.015).
Square it (0.000225) and add it to both sides.

Add '0.000225' to each side of the equation.
0.03x + 0.000225 + x2 = 1.72 + 0.000225

Reorder the terms:
0.000225 + 0.03x + x2 = 1.72 + 0.000225

Combine like terms: 1.72 + 0.000225 = 1.720225
0.000225 + 0.03x + x2 = 1.720225

Factor a perfect square on the left side:
(x + 0.015)(x + 0.015) = 1.720225

Calculate the square root of the right side: 1.311573483

Break this problem into two subproblems by setting 
(x + 0.015) equal to 1.311573483 and -1.311573483.

Subproblem 1

x + 0.015 = 1.311573483 Simplifying x + 0.015 = 1.311573483 Reorder the terms: 0.015 + x = 1.311573483 Solving 0.015 + x = 1.311573483 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.015' to each side of the equation. 0.015 + -0.015 + x = 1.311573483 + -0.015 Combine like terms: 0.015 + -0.015 = 0.000 0.000 + x = 1.311573483 + -0.015 x = 1.311573483 + -0.015 Combine like terms: 1.311573483 + -0.015 = 1.296573483 x = 1.296573483 Simplifying x = 1.296573483

Subproblem 2

x + 0.015 = -1.311573483 Simplifying x + 0.015 = -1.311573483 Reorder the terms: 0.015 + x = -1.311573483 Solving 0.015 + x = -1.311573483 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.015' to each side of the equation. 0.015 + -0.015 + x = -1.311573483 + -0.015 Combine like terms: 0.015 + -0.015 = 0.000 0.000 + x = -1.311573483 + -0.015 x = -1.311573483 + -0.015 Combine like terms: -1.311573483 + -0.015 = -1.326573483 x = -1.326573483 Simplifying x = -1.326573483

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.296573483, -1.326573483}

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