9x^2+23x-10=0

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Solution for 9x^2+23x-10=0 equation:


Simplifying
9x2 + 23x + -10 = 0

Reorder the terms:
-10 + 23x + 9x2 = 0

Solving
-10 + 23x + 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'.
-1.111111111 + 2.555555556x + x2 = 0

Move the constant term to the right:

Add '1.111111111' to each side of the equation.
-1.111111111 + 2.555555556x + 1.111111111 + x2 = 0 + 1.111111111

Reorder the terms:
-1.111111111 + 1.111111111 + 2.555555556x + x2 = 0 + 1.111111111

Combine like terms: -1.111111111 + 1.111111111 = 0.000000000
0.000000000 + 2.555555556x + x2 = 0 + 1.111111111
2.555555556x + x2 = 0 + 1.111111111

Combine like terms: 0 + 1.111111111 = 1.111111111
2.555555556x + x2 = 1.111111111

The x term is 2.555555556x.  Take half its coefficient (1.277777778).
Square it (1.632716050) and add it to both sides.

Add '1.632716050' to each side of the equation.
2.555555556x + 1.632716050 + x2 = 1.111111111 + 1.632716050

Reorder the terms:
1.632716050 + 2.555555556x + x2 = 1.111111111 + 1.632716050

Combine like terms: 1.111111111 + 1.632716050 = 2.743827161
1.632716050 + 2.555555556x + x2 = 2.743827161

Factor a perfect square on the left side:
(x + 1.277777778)(x + 1.277777778) = 2.743827161

Calculate the square root of the right side: 1.656450169

Break this problem into two subproblems by setting 
(x + 1.277777778) equal to 1.656450169 and -1.656450169.

Subproblem 1

x + 1.277777778 = 1.656450169 Simplifying x + 1.277777778 = 1.656450169 Reorder the terms: 1.277777778 + x = 1.656450169 Solving 1.277777778 + x = 1.656450169 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.277777778' to each side of the equation. 1.277777778 + -1.277777778 + x = 1.656450169 + -1.277777778 Combine like terms: 1.277777778 + -1.277777778 = 0.000000000 0.000000000 + x = 1.656450169 + -1.277777778 x = 1.656450169 + -1.277777778 Combine like terms: 1.656450169 + -1.277777778 = 0.378672391 x = 0.378672391 Simplifying x = 0.378672391

Subproblem 2

x + 1.277777778 = -1.656450169 Simplifying x + 1.277777778 = -1.656450169 Reorder the terms: 1.277777778 + x = -1.656450169 Solving 1.277777778 + x = -1.656450169 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.277777778' to each side of the equation. 1.277777778 + -1.277777778 + x = -1.656450169 + -1.277777778 Combine like terms: 1.277777778 + -1.277777778 = 0.000000000 0.000000000 + x = -1.656450169 + -1.277777778 x = -1.656450169 + -1.277777778 Combine like terms: -1.656450169 + -1.277777778 = -2.934227947 x = -2.934227947 Simplifying x = -2.934227947

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.378672391, -2.934227947}

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