0=7x^2-54x-52

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Solution for 0=7x^2-54x-52 equation:


Simplifying
0 = 7x2 + -54x + -52

Reorder the terms:
0 = -52 + -54x + 7x2

Solving
0 = -52 + -54x + 7x2

Solving for variable 'x'.

Combine like terms: 0 + 52 = 52
52 + 54x + -7x2 = -52 + -54x + 7x2 + 52 + 54x + -7x2

Reorder the terms:
52 + 54x + -7x2 = -52 + 52 + -54x + 54x + 7x2 + -7x2

Combine like terms: -52 + 52 = 0
52 + 54x + -7x2 = 0 + -54x + 54x + 7x2 + -7x2
52 + 54x + -7x2 = -54x + 54x + 7x2 + -7x2

Combine like terms: -54x + 54x = 0
52 + 54x + -7x2 = 0 + 7x2 + -7x2
52 + 54x + -7x2 = 7x2 + -7x2

Combine like terms: 7x2 + -7x2 = 0
52 + 54x + -7x2 = 0

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

Divide each side by '-7'.
-7.428571429 + -7.714285714x + x2 = 0

Move the constant term to the right:

Add '7.428571429' to each side of the equation.
-7.428571429 + -7.714285714x + 7.428571429 + x2 = 0 + 7.428571429

Reorder the terms:
-7.428571429 + 7.428571429 + -7.714285714x + x2 = 0 + 7.428571429

Combine like terms: -7.428571429 + 7.428571429 = 0.000000000
0.000000000 + -7.714285714x + x2 = 0 + 7.428571429
-7.714285714x + x2 = 0 + 7.428571429

Combine like terms: 0 + 7.428571429 = 7.428571429
-7.714285714x + x2 = 7.428571429

The x term is -7.714285714x.  Take half its coefficient (-3.857142857).
Square it (14.87755102) and add it to both sides.

Add '14.87755102' to each side of the equation.
-7.714285714x + 14.87755102 + x2 = 7.428571429 + 14.87755102

Reorder the terms:
14.87755102 + -7.714285714x + x2 = 7.428571429 + 14.87755102

Combine like terms: 7.428571429 + 14.87755102 = 22.306122449
14.87755102 + -7.714285714x + x2 = 22.306122449

Factor a perfect square on the left side:
(x + -3.857142857)(x + -3.857142857) = 22.306122449

Calculate the square root of the right side: 4.722935787

Break this problem into two subproblems by setting 
(x + -3.857142857) equal to 4.722935787 and -4.722935787.

Subproblem 1

x + -3.857142857 = 4.722935787 Simplifying x + -3.857142857 = 4.722935787 Reorder the terms: -3.857142857 + x = 4.722935787 Solving -3.857142857 + x = 4.722935787 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.857142857' to each side of the equation. -3.857142857 + 3.857142857 + x = 4.722935787 + 3.857142857 Combine like terms: -3.857142857 + 3.857142857 = 0.000000000 0.000000000 + x = 4.722935787 + 3.857142857 x = 4.722935787 + 3.857142857 Combine like terms: 4.722935787 + 3.857142857 = 8.580078644 x = 8.580078644 Simplifying x = 8.580078644

Subproblem 2

x + -3.857142857 = -4.722935787 Simplifying x + -3.857142857 = -4.722935787 Reorder the terms: -3.857142857 + x = -4.722935787 Solving -3.857142857 + x = -4.722935787 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.857142857' to each side of the equation. -3.857142857 + 3.857142857 + x = -4.722935787 + 3.857142857 Combine like terms: -3.857142857 + 3.857142857 = 0.000000000 0.000000000 + x = -4.722935787 + 3.857142857 x = -4.722935787 + 3.857142857 Combine like terms: -4.722935787 + 3.857142857 = -0.86579293 x = -0.86579293 Simplifying x = -0.86579293

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.580078644, -0.86579293}

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