(x^2-3)*.05-(x+3)*.05=0

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Solution for (x^2-3)*.05-(x+3)*.05=0 equation:


Simplifying
(x2 + -3) * 0.05 + -1(x + 3) * 0.05 = 0

Reorder the terms:
(-3 + x2) * 0.05 + -1(x + 3) * 0.05 = 0

Reorder the terms for easier multiplication:
0.05(-3 + x2) + -1(x + 3) * 0.05 = 0
(-3 * 0.05 + x2 * 0.05) + -1(x + 3) * 0.05 = 0
(-0.15 + 0.05x2) + -1(x + 3) * 0.05 = 0

Reorder the terms:
-0.15 + 0.05x2 + -1(3 + x) * 0.05 = 0

Reorder the terms for easier multiplication:
-0.15 + 0.05x2 + -1 * 0.05(3 + x) = 0

Multiply -1 * 0.05
-0.15 + 0.05x2 + -0.05(3 + x) = 0
-0.15 + 0.05x2 + (3 * -0.05 + x * -0.05) = 0
-0.15 + 0.05x2 + (-0.15 + -0.05x) = 0

Reorder the terms:
-0.15 + -0.15 + -0.05x + 0.05x2 = 0

Combine like terms: -0.15 + -0.15 = -0.3
-0.3 + -0.05x + 0.05x2 = 0

Solving
-0.3 + -0.05x + 0.05x2 = 0

Solving for variable 'x'.

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

Divide each side by '0.05'.
-6 + -1x + x2 = 0

Move the constant term to the right:

Add '6' to each side of the equation.
-6 + -1x + 6 + x2 = 0 + 6

Reorder the terms:
-6 + 6 + -1x + x2 = 0 + 6

Combine like terms: -6 + 6 = 0
0 + -1x + x2 = 0 + 6
-1x + x2 = 0 + 6

Combine like terms: 0 + 6 = 6
-1x + x2 = 6

The x term is -1x.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = 6 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 6 + 0.25

Combine like terms: 6 + 0.25 = 6.25
0.25 + -1x + x2 = 6.25

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 6.25

Calculate the square root of the right side: 2.5

Break this problem into two subproblems by setting 
(x + -0.5) equal to 2.5 and -2.5.

Subproblem 1

x + -0.5 = 2.5 Simplifying x + -0.5 = 2.5 Reorder the terms: -0.5 + x = 2.5 Solving -0.5 + x = 2.5 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 2.5 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 2.5 + 0.5 x = 2.5 + 0.5 Combine like terms: 2.5 + 0.5 = 3 x = 3 Simplifying x = 3

Subproblem 2

x + -0.5 = -2.5 Simplifying x + -0.5 = -2.5 Reorder the terms: -0.5 + x = -2.5 Solving -0.5 + x = -2.5 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -2.5 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -2.5 + 0.5 x = -2.5 + 0.5 Combine like terms: -2.5 + 0.5 = -2 x = -2 Simplifying x = -2

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3, -2}

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