(2x-9)(2x-9)+5x(4-3)=999999999999999

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Solution for (2x-9)(2x-9)+5x(4-3)=999999999999999 equation:


Simplifying
(2x + -9)(2x + -9) + 5x(4 + -3) = 999999999999999

Reorder the terms:
(-9 + 2x)(2x + -9) + 5x(4 + -3) = 999999999999999

Reorder the terms:
(-9 + 2x)(-9 + 2x) + 5x(4 + -3) = 999999999999999

Multiply (-9 + 2x) * (-9 + 2x)
(-9(-9 + 2x) + 2x * (-9 + 2x)) + 5x(4 + -3) = 999999999999999
((-9 * -9 + 2x * -9) + 2x * (-9 + 2x)) + 5x(4 + -3) = 999999999999999
((81 + -18x) + 2x * (-9 + 2x)) + 5x(4 + -3) = 999999999999999
(81 + -18x + (-9 * 2x + 2x * 2x)) + 5x(4 + -3) = 999999999999999
(81 + -18x + (-18x + 4x2)) + 5x(4 + -3) = 999999999999999

Combine like terms: -18x + -18x = -36x
(81 + -36x + 4x2) + 5x(4 + -3) = 999999999999999

Combine like terms: 4 + -3 = 1
81 + -36x + 4x2 + 5x(1) = 999999999999999

Reorder the terms for easier multiplication:
81 + -36x + 4x2 + 5 * 1x = 999999999999999

Multiply 5 * 1
81 + -36x + 4x2 + 5x = 999999999999999

Reorder the terms:
81 + -36x + 5x + 4x2 = 999999999999999

Combine like terms: -36x + 5x = -31x
81 + -31x + 4x2 = 999999999999999

Solving
81 + -31x + 4x2 = 999999999999999

Solving for variable 'x'.

Reorder the terms:
81 + -999999999999999 + -31x + 4x2 = 999999999999999 + -999999999999999

Combine like terms: 81 + -999999999999999 = -999999999999918
-999999999999918 + -31x + 4x2 = 999999999999999 + -999999999999999

Combine like terms: 999999999999999 + -999999999999999 = 0
-999999999999918 + -31x + 4x2 = 0

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

Divide each side by '4'.
-250000000000000 + -7.75x + x2 = 0

Move the constant term to the right:

Add '250000000000000' to each side of the equation.
-250000000000000 + -7.75x + 250000000000000 + x2 = 0 + 250000000000000

Reorder the terms:
-250000000000000 + 250000000000000 + -7.75x + x2 = 0 + 250000000000000

Combine like terms: -250000000000000 + 250000000000000 = 0
0 + -7.75x + x2 = 0 + 250000000000000
-7.75x + x2 = 0 + 250000000000000

Combine like terms: 0 + 250000000000000 = 250000000000000
-7.75x + x2 = 250000000000000

The x term is -7.75x.  Take half its coefficient (-3.875).
Square it (15.015625) and add it to both sides.

Add '15.015625' to each side of the equation.
-7.75x + 15.015625 + x2 = 250000000000000 + 15.015625

Reorder the terms:
15.015625 + -7.75x + x2 = 250000000000000 + 15.015625

Combine like terms: 250000000000000 + 15.015625 = 250000000000015.015625
15.015625 + -7.75x + x2 = 250000000000015.015625

Factor a perfect square on the left side:
(x + -3.875)(x + -3.875) = 250000000000015.015625

Calculate the square root of the right side: 15811388.300842371

Break this problem into two subproblems by setting 
(x + -3.875) equal to 15811388.300842371 and -15811388.300842371.

Subproblem 1

x + -3.875 = 15811388.300842371 Simplifying x + -3.875 = 15811388.300842371 Reorder the terms: -3.875 + x = 15811388.300842371 Solving -3.875 + x = 15811388.300842371 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.875' to each side of the equation. -3.875 + 3.875 + x = 15811388.300842371 + 3.875 Combine like terms: -3.875 + 3.875 = 0.000 0.000 + x = 15811388.300842371 + 3.875 x = 15811388.300842371 + 3.875 Combine like terms: 15811388.300842371 + 3.875 = 15811392.175842371 x = 15811392.175842371 Simplifying x = 15811392.175842371

Subproblem 2

x + -3.875 = -15811388.300842371 Simplifying x + -3.875 = -15811388.300842371 Reorder the terms: -3.875 + x = -15811388.300842371 Solving -3.875 + x = -15811388.300842371 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '3.875' to each side of the equation. -3.875 + 3.875 + x = -15811388.300842371 + 3.875 Combine like terms: -3.875 + 3.875 = 0.000 0.000 + x = -15811388.300842371 + 3.875 x = -15811388.300842371 + 3.875 Combine like terms: -15811388.300842371 + 3.875 = -15811384.425842371 x = -15811384.425842371 Simplifying x = -15811384.425842371

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15811392.175842371, -15811384.425842371}

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