22X^2+40.6X-36=0

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Solution for 22X^2+40.6X-36=0 equation:


Simplifying
22X2 + 40.6X + -36 = 0

Reorder the terms:
-36 + 40.6X + 22X2 = 0

Solving
-36 + 40.6X + 22X2 = 0

Solving for variable 'X'.

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

Divide each side by '22'.
-1.636363636 + 1.845454545X + X2 = 0

Move the constant term to the right:

Add '1.636363636' to each side of the equation.
-1.636363636 + 1.845454545X + 1.636363636 + X2 = 0 + 1.636363636

Reorder the terms:
-1.636363636 + 1.636363636 + 1.845454545X + X2 = 0 + 1.636363636

Combine like terms: -1.636363636 + 1.636363636 = 0.000000000
0.000000000 + 1.845454545X + X2 = 0 + 1.636363636
1.845454545X + X2 = 0 + 1.636363636

Combine like terms: 0 + 1.636363636 = 1.636363636
1.845454545X + X2 = 1.636363636

The X term is 1.845454545X.  Take half its coefficient (0.9227272725).
Square it (0.8514256194) and add it to both sides.

Add '0.8514256194' to each side of the equation.
1.845454545X + 0.8514256194 + X2 = 1.636363636 + 0.8514256194

Reorder the terms:
0.8514256194 + 1.845454545X + X2 = 1.636363636 + 0.8514256194

Combine like terms: 1.636363636 + 0.8514256194 = 2.4877892554
0.8514256194 + 1.845454545X + X2 = 2.4877892554

Factor a perfect square on the left side:
(X + 0.9227272725)(X + 0.9227272725) = 2.4877892554

Calculate the square root of the right side: 1.577272727

Break this problem into two subproblems by setting 
(X + 0.9227272725) equal to 1.577272727 and -1.577272727.

Subproblem 1

X + 0.9227272725 = 1.577272727 Simplifying X + 0.9227272725 = 1.577272727 Reorder the terms: 0.9227272725 + X = 1.577272727 Solving 0.9227272725 + X = 1.577272727 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-0.9227272725' to each side of the equation. 0.9227272725 + -0.9227272725 + X = 1.577272727 + -0.9227272725 Combine like terms: 0.9227272725 + -0.9227272725 = 0.0000000000 0.0000000000 + X = 1.577272727 + -0.9227272725 X = 1.577272727 + -0.9227272725 Combine like terms: 1.577272727 + -0.9227272725 = 0.6545454545 X = 0.6545454545 Simplifying X = 0.6545454545

Subproblem 2

X + 0.9227272725 = -1.577272727 Simplifying X + 0.9227272725 = -1.577272727 Reorder the terms: 0.9227272725 + X = -1.577272727 Solving 0.9227272725 + X = -1.577272727 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right. Add '-0.9227272725' to each side of the equation. 0.9227272725 + -0.9227272725 + X = -1.577272727 + -0.9227272725 Combine like terms: 0.9227272725 + -0.9227272725 = 0.0000000000 0.0000000000 + X = -1.577272727 + -0.9227272725 X = -1.577272727 + -0.9227272725 Combine like terms: -1.577272727 + -0.9227272725 = -2.4999999995 X = -2.4999999995 Simplifying X = -2.4999999995

Solution

The solution to the problem is based on the solutions from the subproblems. X = {0.6545454545, -2.4999999995}

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