14=7x(x)-19x+23

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Solution for 14=7x(x)-19x+23 equation:


Simplifying
14 = 7x(x) + -19x + 23

Multiply x * x
14 = 7x2 + -19x + 23

Reorder the terms:
14 = 23 + -19x + 7x2

Solving
14 = 23 + -19x + 7x2

Solving for variable 'x'.

Combine like terms: 14 + -23 = -9
-9 + 19x + -7x2 = 23 + -19x + 7x2 + -23 + 19x + -7x2

Reorder the terms:
-9 + 19x + -7x2 = 23 + -23 + -19x + 19x + 7x2 + -7x2

Combine like terms: 23 + -23 = 0
-9 + 19x + -7x2 = 0 + -19x + 19x + 7x2 + -7x2
-9 + 19x + -7x2 = -19x + 19x + 7x2 + -7x2

Combine like terms: -19x + 19x = 0
-9 + 19x + -7x2 = 0 + 7x2 + -7x2
-9 + 19x + -7x2 = 7x2 + -7x2

Combine like terms: 7x2 + -7x2 = 0
-9 + 19x + -7x2 = 0

Begin completing the square.  Divide all terms by
-7 the coefficient of the squared term: 

Divide each side by '-7'.
1.285714286 + -2.714285714x + x2 = 0

Move the constant term to the right:

Add '-1.285714286' to each side of the equation.
1.285714286 + -2.714285714x + -1.285714286 + x2 = 0 + -1.285714286

Reorder the terms:
1.285714286 + -1.285714286 + -2.714285714x + x2 = 0 + -1.285714286

Combine like terms: 1.285714286 + -1.285714286 = 0.000000000
0.000000000 + -2.714285714x + x2 = 0 + -1.285714286
-2.714285714x + x2 = 0 + -1.285714286

Combine like terms: 0 + -1.285714286 = -1.285714286
-2.714285714x + x2 = -1.285714286

The x term is -2.714285714x.  Take half its coefficient (-1.357142857).
Square it (1.841836734) and add it to both sides.

Add '1.841836734' to each side of the equation.
-2.714285714x + 1.841836734 + x2 = -1.285714286 + 1.841836734

Reorder the terms:
1.841836734 + -2.714285714x + x2 = -1.285714286 + 1.841836734

Combine like terms: -1.285714286 + 1.841836734 = 0.556122448
1.841836734 + -2.714285714x + x2 = 0.556122448

Factor a perfect square on the left side:
(x + -1.357142857)(x + -1.357142857) = 0.556122448

Calculate the square root of the right side: 0.745736179

Break this problem into two subproblems by setting 
(x + -1.357142857) equal to 0.745736179 and -0.745736179.

Subproblem 1

x + -1.357142857 = 0.745736179 Simplifying x + -1.357142857 = 0.745736179 Reorder the terms: -1.357142857 + x = 0.745736179 Solving -1.357142857 + x = 0.745736179 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.357142857' to each side of the equation. -1.357142857 + 1.357142857 + x = 0.745736179 + 1.357142857 Combine like terms: -1.357142857 + 1.357142857 = 0.000000000 0.000000000 + x = 0.745736179 + 1.357142857 x = 0.745736179 + 1.357142857 Combine like terms: 0.745736179 + 1.357142857 = 2.102879036 x = 2.102879036 Simplifying x = 2.102879036

Subproblem 2

x + -1.357142857 = -0.745736179 Simplifying x + -1.357142857 = -0.745736179 Reorder the terms: -1.357142857 + x = -0.745736179 Solving -1.357142857 + x = -0.745736179 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.357142857' to each side of the equation. -1.357142857 + 1.357142857 + x = -0.745736179 + 1.357142857 Combine like terms: -1.357142857 + 1.357142857 = 0.000000000 0.000000000 + x = -0.745736179 + 1.357142857 x = -0.745736179 + 1.357142857 Combine like terms: -0.745736179 + 1.357142857 = 0.611406678 x = 0.611406678 Simplifying x = 0.611406678

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.102879036, 0.611406678}

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