3x+8=64x^2-80x+25

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Solution for 3x+8=64x^2-80x+25 equation:


Simplifying
3x + 8 = 64x2 + -80x + 25

Reorder the terms:
8 + 3x = 64x2 + -80x + 25

Reorder the terms:
8 + 3x = 25 + -80x + 64x2

Solving
8 + 3x = 25 + -80x + 64x2

Solving for variable 'x'.

Reorder the terms:
8 + -25 + 3x + 80x + -64x2 = 25 + -80x + 64x2 + -25 + 80x + -64x2

Combine like terms: 8 + -25 = -17
-17 + 3x + 80x + -64x2 = 25 + -80x + 64x2 + -25 + 80x + -64x2

Combine like terms: 3x + 80x = 83x
-17 + 83x + -64x2 = 25 + -80x + 64x2 + -25 + 80x + -64x2

Reorder the terms:
-17 + 83x + -64x2 = 25 + -25 + -80x + 80x + 64x2 + -64x2

Combine like terms: 25 + -25 = 0
-17 + 83x + -64x2 = 0 + -80x + 80x + 64x2 + -64x2
-17 + 83x + -64x2 = -80x + 80x + 64x2 + -64x2

Combine like terms: -80x + 80x = 0
-17 + 83x + -64x2 = 0 + 64x2 + -64x2
-17 + 83x + -64x2 = 64x2 + -64x2

Combine like terms: 64x2 + -64x2 = 0
-17 + 83x + -64x2 = 0

Begin completing the square.  Divide all terms by
-64 the coefficient of the squared term: 

Divide each side by '-64'.
0.265625 + -1.296875x + x2 = 0

Move the constant term to the right:

Add '-0.265625' to each side of the equation.
0.265625 + -1.296875x + -0.265625 + x2 = 0 + -0.265625

Reorder the terms:
0.265625 + -0.265625 + -1.296875x + x2 = 0 + -0.265625

Combine like terms: 0.265625 + -0.265625 = 0.000000
0.000000 + -1.296875x + x2 = 0 + -0.265625
-1.296875x + x2 = 0 + -0.265625

Combine like terms: 0 + -0.265625 = -0.265625
-1.296875x + x2 = -0.265625

The x term is -1.296875x.  Take half its coefficient (-0.6484375).
Square it (0.4204711914) and add it to both sides.

Add '0.4204711914' to each side of the equation.
-1.296875x + 0.4204711914 + x2 = -0.265625 + 0.4204711914

Reorder the terms:
0.4204711914 + -1.296875x + x2 = -0.265625 + 0.4204711914

Combine like terms: -0.265625 + 0.4204711914 = 0.1548461914
0.4204711914 + -1.296875x + x2 = 0.1548461914

Factor a perfect square on the left side:
(x + -0.6484375)(x + -0.6484375) = 0.1548461914

Calculate the square root of the right side: 0.393505008

Break this problem into two subproblems by setting 
(x + -0.6484375) equal to 0.393505008 and -0.393505008.

Subproblem 1

x + -0.6484375 = 0.393505008 Simplifying x + -0.6484375 = 0.393505008 Reorder the terms: -0.6484375 + x = 0.393505008 Solving -0.6484375 + x = 0.393505008 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6484375' to each side of the equation. -0.6484375 + 0.6484375 + x = 0.393505008 + 0.6484375 Combine like terms: -0.6484375 + 0.6484375 = 0.0000000 0.0000000 + x = 0.393505008 + 0.6484375 x = 0.393505008 + 0.6484375 Combine like terms: 0.393505008 + 0.6484375 = 1.041942508 x = 1.041942508 Simplifying x = 1.041942508

Subproblem 2

x + -0.6484375 = -0.393505008 Simplifying x + -0.6484375 = -0.393505008 Reorder the terms: -0.6484375 + x = -0.393505008 Solving -0.6484375 + x = -0.393505008 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.6484375' to each side of the equation. -0.6484375 + 0.6484375 + x = -0.393505008 + 0.6484375 Combine like terms: -0.6484375 + 0.6484375 = 0.0000000 0.0000000 + x = -0.393505008 + 0.6484375 x = -0.393505008 + 0.6484375 Combine like terms: -0.393505008 + 0.6484375 = 0.254932492 x = 0.254932492 Simplifying x = 0.254932492

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.041942508, 0.254932492}

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