3x^2+5x+9=32

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Solution for 3x^2+5x+9=32 equation:


Simplifying
3x2 + 5x + 9 = 32

Reorder the terms:
9 + 5x + 3x2 = 32

Solving
9 + 5x + 3x2 = 32

Solving for variable 'x'.

Reorder the terms:
9 + -32 + 5x + 3x2 = 32 + -32

Combine like terms: 9 + -32 = -23
-23 + 5x + 3x2 = 32 + -32

Combine like terms: 32 + -32 = 0
-23 + 5x + 3x2 = 0

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

Divide each side by '3'.
-7.666666667 + 1.666666667x + x2 = 0

Move the constant term to the right:

Add '7.666666667' to each side of the equation.
-7.666666667 + 1.666666667x + 7.666666667 + x2 = 0 + 7.666666667

Reorder the terms:
-7.666666667 + 7.666666667 + 1.666666667x + x2 = 0 + 7.666666667

Combine like terms: -7.666666667 + 7.666666667 = 0.000000000
0.000000000 + 1.666666667x + x2 = 0 + 7.666666667
1.666666667x + x2 = 0 + 7.666666667

Combine like terms: 0 + 7.666666667 = 7.666666667
1.666666667x + x2 = 7.666666667

The x term is 1.666666667x.  Take half its coefficient (0.8333333335).
Square it (0.6944444447) and add it to both sides.

Add '0.6944444447' to each side of the equation.
1.666666667x + 0.6944444447 + x2 = 7.666666667 + 0.6944444447

Reorder the terms:
0.6944444447 + 1.666666667x + x2 = 7.666666667 + 0.6944444447

Combine like terms: 7.666666667 + 0.6944444447 = 8.3611111117
0.6944444447 + 1.666666667x + x2 = 8.3611111117

Factor a perfect square on the left side:
(x + 0.8333333335)(x + 0.8333333335) = 8.3611111117

Calculate the square root of the right side: 2.891558596

Break this problem into two subproblems by setting 
(x + 0.8333333335) equal to 2.891558596 and -2.891558596.

Subproblem 1

x + 0.8333333335 = 2.891558596 Simplifying x + 0.8333333335 = 2.891558596 Reorder the terms: 0.8333333335 + x = 2.891558596 Solving 0.8333333335 + x = 2.891558596 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8333333335' to each side of the equation. 0.8333333335 + -0.8333333335 + x = 2.891558596 + -0.8333333335 Combine like terms: 0.8333333335 + -0.8333333335 = 0.0000000000 0.0000000000 + x = 2.891558596 + -0.8333333335 x = 2.891558596 + -0.8333333335 Combine like terms: 2.891558596 + -0.8333333335 = 2.0582252625 x = 2.0582252625 Simplifying x = 2.0582252625

Subproblem 2

x + 0.8333333335 = -2.891558596 Simplifying x + 0.8333333335 = -2.891558596 Reorder the terms: 0.8333333335 + x = -2.891558596 Solving 0.8333333335 + x = -2.891558596 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.8333333335' to each side of the equation. 0.8333333335 + -0.8333333335 + x = -2.891558596 + -0.8333333335 Combine like terms: 0.8333333335 + -0.8333333335 = 0.0000000000 0.0000000000 + x = -2.891558596 + -0.8333333335 x = -2.891558596 + -0.8333333335 Combine like terms: -2.891558596 + -0.8333333335 = -3.7248919295 x = -3.7248919295 Simplifying x = -3.7248919295

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.0582252625, -3.7248919295}

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