-7x+8x(36x)+19=99

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Solution for -7x+8x(36x)+19=99 equation:


Simplifying
-7x + 8x(36x) + 19 = 99

Remove parenthesis around (36x)
-7x + 8x * 36x + 19 = 99

Reorder the terms for easier multiplication:
-7x + 8 * 36x * x + 19 = 99

Multiply 8 * 36
-7x + 288x * x + 19 = 99

Multiply x * x
-7x + 288x2 + 19 = 99

Reorder the terms:
19 + -7x + 288x2 = 99

Solving
19 + -7x + 288x2 = 99

Solving for variable 'x'.

Reorder the terms:
19 + -99 + -7x + 288x2 = 99 + -99

Combine like terms: 19 + -99 = -80
-80 + -7x + 288x2 = 99 + -99

Combine like terms: 99 + -99 = 0
-80 + -7x + 288x2 = 0

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

Divide each side by '288'.
-0.2777777778 + -0.02430555556x + x2 = 0

Move the constant term to the right:

Add '0.2777777778' to each side of the equation.
-0.2777777778 + -0.02430555556x + 0.2777777778 + x2 = 0 + 0.2777777778

Reorder the terms:
-0.2777777778 + 0.2777777778 + -0.02430555556x + x2 = 0 + 0.2777777778

Combine like terms: -0.2777777778 + 0.2777777778 = 0.0000000000
0.0000000000 + -0.02430555556x + x2 = 0 + 0.2777777778
-0.02430555556x + x2 = 0 + 0.2777777778

Combine like terms: 0 + 0.2777777778 = 0.2777777778
-0.02430555556x + x2 = 0.2777777778

The x term is -0.02430555556x.  Take half its coefficient (-0.01215277778).
Square it (0.0001476900078) and add it to both sides.

Add '0.0001476900078' to each side of the equation.
-0.02430555556x + 0.0001476900078 + x2 = 0.2777777778 + 0.0001476900078

Reorder the terms:
0.0001476900078 + -0.02430555556x + x2 = 0.2777777778 + 0.0001476900078

Combine like terms: 0.2777777778 + 0.0001476900078 = 0.2779254678078
0.0001476900078 + -0.02430555556x + x2 = 0.2779254678078

Factor a perfect square on the left side:
(x + -0.01215277778)(x + -0.01215277778) = 0.2779254678078

Calculate the square root of the right side: 0.527186369

Break this problem into two subproblems by setting 
(x + -0.01215277778) equal to 0.527186369 and -0.527186369.

Subproblem 1

x + -0.01215277778 = 0.527186369 Simplifying x + -0.01215277778 = 0.527186369 Reorder the terms: -0.01215277778 + x = 0.527186369 Solving -0.01215277778 + x = 0.527186369 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.01215277778' to each side of the equation. -0.01215277778 + 0.01215277778 + x = 0.527186369 + 0.01215277778 Combine like terms: -0.01215277778 + 0.01215277778 = 0.00000000000 0.00000000000 + x = 0.527186369 + 0.01215277778 x = 0.527186369 + 0.01215277778 Combine like terms: 0.527186369 + 0.01215277778 = 0.53933914678 x = 0.53933914678 Simplifying x = 0.53933914678

Subproblem 2

x + -0.01215277778 = -0.527186369 Simplifying x + -0.01215277778 = -0.527186369 Reorder the terms: -0.01215277778 + x = -0.527186369 Solving -0.01215277778 + x = -0.527186369 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.01215277778' to each side of the equation. -0.01215277778 + 0.01215277778 + x = -0.527186369 + 0.01215277778 Combine like terms: -0.01215277778 + 0.01215277778 = 0.00000000000 0.00000000000 + x = -0.527186369 + 0.01215277778 x = -0.527186369 + 0.01215277778 Combine like terms: -0.527186369 + 0.01215277778 = -0.51503359122 x = -0.51503359122 Simplifying x = -0.51503359122

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.53933914678, -0.51503359122}

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