59x=8x^2-20

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Solution for 59x=8x^2-20 equation:


Simplifying
59x = 8x2 + -20

Reorder the terms:
59x = -20 + 8x2

Solving
59x = -20 + 8x2

Solving for variable 'x'.

Reorder the terms:
20 + 59x + -8x2 = -20 + 8x2 + 20 + -8x2

Reorder the terms:
20 + 59x + -8x2 = -20 + 20 + 8x2 + -8x2

Combine like terms: -20 + 20 = 0
20 + 59x + -8x2 = 0 + 8x2 + -8x2
20 + 59x + -8x2 = 8x2 + -8x2

Combine like terms: 8x2 + -8x2 = 0
20 + 59x + -8x2 = 0

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
-2.5 + -7.375x + x2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + -7.375x + 2.5 + x2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + -7.375x + x2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + -7.375x + x2 = 0 + 2.5
-7.375x + x2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
-7.375x + x2 = 2.5

The x term is -7.375x.  Take half its coefficient (-3.6875).
Square it (13.59765625) and add it to both sides.

Add '13.59765625' to each side of the equation.
-7.375x + 13.59765625 + x2 = 2.5 + 13.59765625

Reorder the terms:
13.59765625 + -7.375x + x2 = 2.5 + 13.59765625

Combine like terms: 2.5 + 13.59765625 = 16.09765625
13.59765625 + -7.375x + x2 = 16.09765625

Factor a perfect square on the left side:
(x + -3.6875)(x + -3.6875) = 16.09765625

Calculate the square root of the right side: 4.012188461

Break this problem into two subproblems by setting 
(x + -3.6875) equal to 4.012188461 and -4.012188461.

Subproblem 1

x + -3.6875 = 4.012188461 Simplifying x + -3.6875 = 4.012188461 Reorder the terms: -3.6875 + x = 4.012188461 Solving -3.6875 + x = 4.012188461 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.6875' to each side of the equation. -3.6875 + 3.6875 + x = 4.012188461 + 3.6875 Combine like terms: -3.6875 + 3.6875 = 0.0000 0.0000 + x = 4.012188461 + 3.6875 x = 4.012188461 + 3.6875 Combine like terms: 4.012188461 + 3.6875 = 7.699688461 x = 7.699688461 Simplifying x = 7.699688461

Subproblem 2

x + -3.6875 = -4.012188461 Simplifying x + -3.6875 = -4.012188461 Reorder the terms: -3.6875 + x = -4.012188461 Solving -3.6875 + x = -4.012188461 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.6875' to each side of the equation. -3.6875 + 3.6875 + x = -4.012188461 + 3.6875 Combine like terms: -3.6875 + 3.6875 = 0.0000 0.0000 + x = -4.012188461 + 3.6875 x = -4.012188461 + 3.6875 Combine like terms: -4.012188461 + 3.6875 = -0.324688461 x = -0.324688461 Simplifying x = -0.324688461

Solution

The solution to the problem is based on the solutions from the subproblems. x = {7.699688461, -0.324688461}

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