23x+3.50x^2=117.72

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Solution for 23x+3.50x^2=117.72 equation:


Simplifying
23x + 3.50x2 = 117.72

Solving
23x + 3.50x2 = 117.72

Solving for variable 'x'.

Reorder the terms:
-117.72 + 23x + 3.50x2 = 117.72 + -117.72

Combine like terms: 117.72 + -117.72 = 0.00
-117.72 + 23x + 3.50x2 = 0.00

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

Divide each side by '3.50'.
-33.63428571 + 6.571428571x + x2 = 0

Move the constant term to the right:

Add '33.63428571' to each side of the equation.
-33.63428571 + 6.571428571x + 33.63428571 + x2 = 0 + 33.63428571

Reorder the terms:
-33.63428571 + 33.63428571 + 6.571428571x + x2 = 0 + 33.63428571

Combine like terms: -33.63428571 + 33.63428571 = 0.00000000
0.00000000 + 6.571428571x + x2 = 0 + 33.63428571
6.571428571x + x2 = 0 + 33.63428571

Combine like terms: 0 + 33.63428571 = 33.63428571
6.571428571x + x2 = 33.63428571

The x term is 6.571428571x.  Take half its coefficient (3.285714286).
Square it (10.79591837) and add it to both sides.

Add '10.79591837' to each side of the equation.
6.571428571x + 10.79591837 + x2 = 33.63428571 + 10.79591837

Reorder the terms:
10.79591837 + 6.571428571x + x2 = 33.63428571 + 10.79591837

Combine like terms: 33.63428571 + 10.79591837 = 44.43020408
10.79591837 + 6.571428571x + x2 = 44.43020408

Factor a perfect square on the left side:
(x + 3.285714286)(x + 3.285714286) = 44.43020408

Calculate the square root of the right side: 6.665598554

Break this problem into two subproblems by setting 
(x + 3.285714286) equal to 6.665598554 and -6.665598554.

Subproblem 1

x + 3.285714286 = 6.665598554 Simplifying x + 3.285714286 = 6.665598554 Reorder the terms: 3.285714286 + x = 6.665598554 Solving 3.285714286 + x = 6.665598554 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.285714286' to each side of the equation. 3.285714286 + -3.285714286 + x = 6.665598554 + -3.285714286 Combine like terms: 3.285714286 + -3.285714286 = 0.000000000 0.000000000 + x = 6.665598554 + -3.285714286 x = 6.665598554 + -3.285714286 Combine like terms: 6.665598554 + -3.285714286 = 3.379884268 x = 3.379884268 Simplifying x = 3.379884268

Subproblem 2

x + 3.285714286 = -6.665598554 Simplifying x + 3.285714286 = -6.665598554 Reorder the terms: 3.285714286 + x = -6.665598554 Solving 3.285714286 + x = -6.665598554 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3.285714286' to each side of the equation. 3.285714286 + -3.285714286 + x = -6.665598554 + -3.285714286 Combine like terms: 3.285714286 + -3.285714286 = 0.000000000 0.000000000 + x = -6.665598554 + -3.285714286 x = -6.665598554 + -3.285714286 Combine like terms: -6.665598554 + -3.285714286 = -9.95131284 x = -9.95131284 Simplifying x = -9.95131284

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.379884268, -9.95131284}

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