9x^2+46x-70=

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Solution for 9x^2+46x-70= equation:


Simplifying
9x2 + 46x + -70 = 0

Reorder the terms:
-70 + 46x + 9x2 = 0

Solving
-70 + 46x + 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'.
-7.777777778 + 5.111111111x + x2 = 0

Move the constant term to the right:

Add '7.777777778' to each side of the equation.
-7.777777778 + 5.111111111x + 7.777777778 + x2 = 0 + 7.777777778

Reorder the terms:
-7.777777778 + 7.777777778 + 5.111111111x + x2 = 0 + 7.777777778

Combine like terms: -7.777777778 + 7.777777778 = 0.000000000
0.000000000 + 5.111111111x + x2 = 0 + 7.777777778
5.111111111x + x2 = 0 + 7.777777778

Combine like terms: 0 + 7.777777778 = 7.777777778
5.111111111x + x2 = 7.777777778

The x term is 5.111111111x.  Take half its coefficient (2.555555556).
Square it (6.530864200) and add it to both sides.

Add '6.530864200' to each side of the equation.
5.111111111x + 6.530864200 + x2 = 7.777777778 + 6.530864200

Reorder the terms:
6.530864200 + 5.111111111x + x2 = 7.777777778 + 6.530864200

Combine like terms: 7.777777778 + 6.530864200 = 14.308641978
6.530864200 + 5.111111111x + x2 = 14.308641978

Factor a perfect square on the left side:
(x + 2.555555556)(x + 2.555555556) = 14.308641978

Calculate the square root of the right side: 3.782676563

Break this problem into two subproblems by setting 
(x + 2.555555556) equal to 3.782676563 and -3.782676563.

Subproblem 1

x + 2.555555556 = 3.782676563 Simplifying x + 2.555555556 = 3.782676563 Reorder the terms: 2.555555556 + x = 3.782676563 Solving 2.555555556 + x = 3.782676563 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.555555556' to each side of the equation. 2.555555556 + -2.555555556 + x = 3.782676563 + -2.555555556 Combine like terms: 2.555555556 + -2.555555556 = 0.000000000 0.000000000 + x = 3.782676563 + -2.555555556 x = 3.782676563 + -2.555555556 Combine like terms: 3.782676563 + -2.555555556 = 1.227121007 x = 1.227121007 Simplifying x = 1.227121007

Subproblem 2

x + 2.555555556 = -3.782676563 Simplifying x + 2.555555556 = -3.782676563 Reorder the terms: 2.555555556 + x = -3.782676563 Solving 2.555555556 + x = -3.782676563 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2.555555556' to each side of the equation. 2.555555556 + -2.555555556 + x = -3.782676563 + -2.555555556 Combine like terms: 2.555555556 + -2.555555556 = 0.000000000 0.000000000 + x = -3.782676563 + -2.555555556 x = -3.782676563 + -2.555555556 Combine like terms: -3.782676563 + -2.555555556 = -6.338232119 x = -6.338232119 Simplifying x = -6.338232119

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.227121007, -6.338232119}

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