3x^2+27x+35=0

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Solution for 3x^2+27x+35=0 equation:


Simplifying
3x2 + 27x + 35 = 0

Reorder the terms:
35 + 27x + 3x2 = 0

Solving
35 + 27x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
11.66666667 + 9x + x2 = 0

Move the constant term to the right:

Add '-11.66666667' to each side of the equation.
11.66666667 + 9x + -11.66666667 + x2 = 0 + -11.66666667

Reorder the terms:
11.66666667 + -11.66666667 + 9x + x2 = 0 + -11.66666667

Combine like terms: 11.66666667 + -11.66666667 = 0.00000000
0.00000000 + 9x + x2 = 0 + -11.66666667
9x + x2 = 0 + -11.66666667

Combine like terms: 0 + -11.66666667 = -11.66666667
9x + x2 = -11.66666667

The x term is 9x.  Take half its coefficient (4.5).
Square it (20.25) and add it to both sides.

Add '20.25' to each side of the equation.
9x + 20.25 + x2 = -11.66666667 + 20.25

Reorder the terms:
20.25 + 9x + x2 = -11.66666667 + 20.25

Combine like terms: -11.66666667 + 20.25 = 8.58333333
20.25 + 9x + x2 = 8.58333333

Factor a perfect square on the left side:
(x + 4.5)(x + 4.5) = 8.58333333

Calculate the square root of the right side: 2.929732638

Break this problem into two subproblems by setting 
(x + 4.5) equal to 2.929732638 and -2.929732638.

Subproblem 1

x + 4.5 = 2.929732638 Simplifying x + 4.5 = 2.929732638 Reorder the terms: 4.5 + x = 2.929732638 Solving 4.5 + x = 2.929732638 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + x = 2.929732638 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + x = 2.929732638 + -4.5 x = 2.929732638 + -4.5 Combine like terms: 2.929732638 + -4.5 = -1.570267362 x = -1.570267362 Simplifying x = -1.570267362

Subproblem 2

x + 4.5 = -2.929732638 Simplifying x + 4.5 = -2.929732638 Reorder the terms: 4.5 + x = -2.929732638 Solving 4.5 + x = -2.929732638 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-4.5' to each side of the equation. 4.5 + -4.5 + x = -2.929732638 + -4.5 Combine like terms: 4.5 + -4.5 = 0.0 0.0 + x = -2.929732638 + -4.5 x = -2.929732638 + -4.5 Combine like terms: -2.929732638 + -4.5 = -7.429732638 x = -7.429732638 Simplifying x = -7.429732638

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-1.570267362, -7.429732638}

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