2=0.6x^2+3x+4

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Solution for 2=0.6x^2+3x+4 equation:


Simplifying
2 = 0.6x2 + 3x + 4

Reorder the terms:
2 = 4 + 3x + 0.6x2

Solving
2 = 4 + 3x + 0.6x2

Solving for variable 'x'.

Combine like terms: 2 + -4 = -2
-2 + -3x + -0.6x2 = 4 + 3x + 0.6x2 + -4 + -3x + -0.6x2

Reorder the terms:
-2 + -3x + -0.6x2 = 4 + -4 + 3x + -3x + 0.6x2 + -0.6x2

Combine like terms: 4 + -4 = 0
-2 + -3x + -0.6x2 = 0 + 3x + -3x + 0.6x2 + -0.6x2
-2 + -3x + -0.6x2 = 3x + -3x + 0.6x2 + -0.6x2

Combine like terms: 3x + -3x = 0
-2 + -3x + -0.6x2 = 0 + 0.6x2 + -0.6x2
-2 + -3x + -0.6x2 = 0.6x2 + -0.6x2

Combine like terms: 0.6x2 + -0.6x2 = 0.0
-2 + -3x + -0.6x2 = 0.0

Begin completing the square.  Divide all terms by
-0.6 the coefficient of the squared term: 

Divide each side by '-0.6'.
3.333333333 + 5x + x2 = 0

Move the constant term to the right:

Add '-3.333333333' to each side of the equation.
3.333333333 + 5x + -3.333333333 + x2 = 0 + -3.333333333

Reorder the terms:
3.333333333 + -3.333333333 + 5x + x2 = 0 + -3.333333333

Combine like terms: 3.333333333 + -3.333333333 = 0.000000000
0.000000000 + 5x + x2 = 0 + -3.333333333
5x + x2 = 0 + -3.333333333

Combine like terms: 0 + -3.333333333 = -3.333333333
5x + x2 = -3.333333333

The x term is 5x.  Take half its coefficient (2.5).
Square it (6.25) and add it to both sides.

Add '6.25' to each side of the equation.
5x + 6.25 + x2 = -3.333333333 + 6.25

Reorder the terms:
6.25 + 5x + x2 = -3.333333333 + 6.25

Combine like terms: -3.333333333 + 6.25 = 2.916666667
6.25 + 5x + x2 = 2.916666667

Factor a perfect square on the left side:
(x + 2.5)(x + 2.5) = 2.916666667

Calculate the square root of the right side: 1.707825128

Break this problem into two subproblems by setting 
(x + 2.5) equal to 1.707825128 and -1.707825128.

Subproblem 1

x + 2.5 = 1.707825128 Simplifying x + 2.5 = 1.707825128 Reorder the terms: 2.5 + x = 1.707825128 Solving 2.5 + x = 1.707825128 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = 1.707825128 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = 1.707825128 + -2.5 x = 1.707825128 + -2.5 Combine like terms: 1.707825128 + -2.5 = -0.792174872 x = -0.792174872 Simplifying x = -0.792174872

Subproblem 2

x + 2.5 = -1.707825128 Simplifying x + 2.5 = -1.707825128 Reorder the terms: 2.5 + x = -1.707825128 Solving 2.5 + x = -1.707825128 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.5' to each side of the equation. 2.5 + -2.5 + x = -1.707825128 + -2.5 Combine like terms: 2.5 + -2.5 = 0.0 0.0 + x = -1.707825128 + -2.5 x = -1.707825128 + -2.5 Combine like terms: -1.707825128 + -2.5 = -4.207825128 x = -4.207825128 Simplifying x = -4.207825128

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-0.792174872, -4.207825128}

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