x^2+3x-2=104

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Solution for x^2+3x-2=104 equation:


Simplifying
x2 + 3x + -2 = 104

Reorder the terms:
-2 + 3x + x2 = 104

Solving
-2 + 3x + x2 = 104

Solving for variable 'x'.

Reorder the terms:
-2 + -104 + 3x + x2 = 104 + -104

Combine like terms: -2 + -104 = -106
-106 + 3x + x2 = 104 + -104

Combine like terms: 104 + -104 = 0
-106 + 3x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '106' to each side of the equation.
-106 + 3x + 106 + x2 = 0 + 106

Reorder the terms:
-106 + 106 + 3x + x2 = 0 + 106

Combine like terms: -106 + 106 = 0
0 + 3x + x2 = 0 + 106
3x + x2 = 0 + 106

Combine like terms: 0 + 106 = 106
3x + x2 = 106

The x term is 3x.  Take half its coefficient (1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
3x + 2.25 + x2 = 106 + 2.25

Reorder the terms:
2.25 + 3x + x2 = 106 + 2.25

Combine like terms: 106 + 2.25 = 108.25
2.25 + 3x + x2 = 108.25

Factor a perfect square on the left side:
(x + 1.5)(x + 1.5) = 108.25

Calculate the square root of the right side: 10.404326023

Break this problem into two subproblems by setting 
(x + 1.5) equal to 10.404326023 and -10.404326023.

Subproblem 1

x + 1.5 = 10.404326023 Simplifying x + 1.5 = 10.404326023 Reorder the terms: 1.5 + x = 10.404326023 Solving 1.5 + x = 10.404326023 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = 10.404326023 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = 10.404326023 + -1.5 x = 10.404326023 + -1.5 Combine like terms: 10.404326023 + -1.5 = 8.904326023 x = 8.904326023 Simplifying x = 8.904326023

Subproblem 2

x + 1.5 = -10.404326023 Simplifying x + 1.5 = -10.404326023 Reorder the terms: 1.5 + x = -10.404326023 Solving 1.5 + x = -10.404326023 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.5' to each side of the equation. 1.5 + -1.5 + x = -10.404326023 + -1.5 Combine like terms: 1.5 + -1.5 = 0.0 0.0 + x = -10.404326023 + -1.5 x = -10.404326023 + -1.5 Combine like terms: -10.404326023 + -1.5 = -11.904326023 x = -11.904326023 Simplifying x = -11.904326023

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.904326023, -11.904326023}

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