9x^2+37x-30=0

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Solution for 9x^2+37x-30=0 equation:


Simplifying
9x2 + 37x + -30 = 0

Reorder the terms:
-30 + 37x + 9x2 = 0

Solving
-30 + 37x + 9x2 = 0

Solving for variable 'x'.

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

Divide each side by '9'.
-3.333333333 + 4.111111111x + x2 = 0

Move the constant term to the right:

Add '3.333333333' to each side of the equation.
-3.333333333 + 4.111111111x + 3.333333333 + x2 = 0 + 3.333333333

Reorder the terms:
-3.333333333 + 3.333333333 + 4.111111111x + x2 = 0 + 3.333333333

Combine like terms: -3.333333333 + 3.333333333 = 0.000000000
0.000000000 + 4.111111111x + x2 = 0 + 3.333333333
4.111111111x + x2 = 0 + 3.333333333

Combine like terms: 0 + 3.333333333 = 3.333333333
4.111111111x + x2 = 3.333333333

The x term is 4.111111111x.  Take half its coefficient (2.055555556).
Square it (4.225308644) and add it to both sides.

Add '4.225308644' to each side of the equation.
4.111111111x + 4.225308644 + x2 = 3.333333333 + 4.225308644

Reorder the terms:
4.225308644 + 4.111111111x + x2 = 3.333333333 + 4.225308644

Combine like terms: 3.333333333 + 4.225308644 = 7.558641977
4.225308644 + 4.111111111x + x2 = 7.558641977

Factor a perfect square on the left side:
(x + 2.055555556)(x + 2.055555556) = 7.558641977

Calculate the square root of the right side: 2.749298452

Break this problem into two subproblems by setting 
(x + 2.055555556) equal to 2.749298452 and -2.749298452.

Subproblem 1

x + 2.055555556 = 2.749298452 Simplifying x + 2.055555556 = 2.749298452 Reorder the terms: 2.055555556 + x = 2.749298452 Solving 2.055555556 + x = 2.749298452 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.055555556' to each side of the equation. 2.055555556 + -2.055555556 + x = 2.749298452 + -2.055555556 Combine like terms: 2.055555556 + -2.055555556 = 0.000000000 0.000000000 + x = 2.749298452 + -2.055555556 x = 2.749298452 + -2.055555556 Combine like terms: 2.749298452 + -2.055555556 = 0.693742896 x = 0.693742896 Simplifying x = 0.693742896

Subproblem 2

x + 2.055555556 = -2.749298452 Simplifying x + 2.055555556 = -2.749298452 Reorder the terms: 2.055555556 + x = -2.749298452 Solving 2.055555556 + x = -2.749298452 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.055555556' to each side of the equation. 2.055555556 + -2.055555556 + x = -2.749298452 + -2.055555556 Combine like terms: 2.055555556 + -2.055555556 = 0.000000000 0.000000000 + x = -2.749298452 + -2.055555556 x = -2.749298452 + -2.055555556 Combine like terms: -2.749298452 + -2.055555556 = -4.804854008 x = -4.804854008 Simplifying x = -4.804854008

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.693742896, -4.804854008}

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