14x^2+36x=38.75

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Solution for 14x^2+36x=38.75 equation:


Simplifying
14x2 + 36x = 38.75

Reorder the terms:
36x + 14x2 = 38.75

Solving
36x + 14x2 = 38.75

Solving for variable 'x'.

Reorder the terms:
-38.75 + 36x + 14x2 = 38.75 + -38.75

Combine like terms: 38.75 + -38.75 = 0.00
-38.75 + 36x + 14x2 = 0.00

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

Divide each side by '14'.
-2.767857143 + 2.571428571x + x2 = 0.00

Move the constant term to the right:

Add '2.767857143' to each side of the equation.
-2.767857143 + 2.571428571x + 2.767857143 + x2 = 0.00 + 2.767857143

Reorder the terms:
-2.767857143 + 2.767857143 + 2.571428571x + x2 = 0.00 + 2.767857143

Combine like terms: -2.767857143 + 2.767857143 = 0.000000000
0.000000000 + 2.571428571x + x2 = 0.00 + 2.767857143
2.571428571x + x2 = 0.00 + 2.767857143

Combine like terms: 0.00 + 2.767857143 = 2.767857143
2.571428571x + x2 = 2.767857143

The x term is 2.571428571x.  Take half its coefficient (1.285714286).
Square it (1.653061225) and add it to both sides.

Add '1.653061225' to each side of the equation.
2.571428571x + 1.653061225 + x2 = 2.767857143 + 1.653061225

Reorder the terms:
1.653061225 + 2.571428571x + x2 = 2.767857143 + 1.653061225

Combine like terms: 2.767857143 + 1.653061225 = 4.420918368
1.653061225 + 2.571428571x + x2 = 4.420918368

Factor a perfect square on the left side:
(x + 1.285714286)(x + 1.285714286) = 4.420918368

Calculate the square root of the right side: 2.102598004

Break this problem into two subproblems by setting 
(x + 1.285714286) equal to 2.102598004 and -2.102598004.

Subproblem 1

x + 1.285714286 = 2.102598004 Simplifying x + 1.285714286 = 2.102598004 Reorder the terms: 1.285714286 + x = 2.102598004 Solving 1.285714286 + x = 2.102598004 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.285714286' to each side of the equation. 1.285714286 + -1.285714286 + x = 2.102598004 + -1.285714286 Combine like terms: 1.285714286 + -1.285714286 = 0.000000000 0.000000000 + x = 2.102598004 + -1.285714286 x = 2.102598004 + -1.285714286 Combine like terms: 2.102598004 + -1.285714286 = 0.816883718 x = 0.816883718 Simplifying x = 0.816883718

Subproblem 2

x + 1.285714286 = -2.102598004 Simplifying x + 1.285714286 = -2.102598004 Reorder the terms: 1.285714286 + x = -2.102598004 Solving 1.285714286 + x = -2.102598004 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-1.285714286' to each side of the equation. 1.285714286 + -1.285714286 + x = -2.102598004 + -1.285714286 Combine like terms: 1.285714286 + -1.285714286 = 0.000000000 0.000000000 + x = -2.102598004 + -1.285714286 x = -2.102598004 + -1.285714286 Combine like terms: -2.102598004 + -1.285714286 = -3.38831229 x = -3.38831229 Simplifying x = -3.38831229

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.816883718, -3.38831229}

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