2x^2+40.32x=221

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Solution for 2x^2+40.32x=221 equation:


Simplifying
2x2 + 40.32x = 221

Reorder the terms:
40.32x + 2x2 = 221

Solving
40.32x + 2x2 = 221

Solving for variable 'x'.

Reorder the terms:
-221 + 40.32x + 2x2 = 221 + -221

Combine like terms: 221 + -221 = 0
-221 + 40.32x + 2x2 = 0

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

Divide each side by '2'.
-110.5 + 20.16x + x2 = 0

Move the constant term to the right:

Add '110.5' to each side of the equation.
-110.5 + 20.16x + 110.5 + x2 = 0 + 110.5

Reorder the terms:
-110.5 + 110.5 + 20.16x + x2 = 0 + 110.5

Combine like terms: -110.5 + 110.5 = 0.0
0.0 + 20.16x + x2 = 0 + 110.5
20.16x + x2 = 0 + 110.5

Combine like terms: 0 + 110.5 = 110.5
20.16x + x2 = 110.5

The x term is 20.16x.  Take half its coefficient (10.08).
Square it (101.6064) and add it to both sides.

Add '101.6064' to each side of the equation.
20.16x + 101.6064 + x2 = 110.5 + 101.6064

Reorder the terms:
101.6064 + 20.16x + x2 = 110.5 + 101.6064

Combine like terms: 110.5 + 101.6064 = 212.1064
101.6064 + 20.16x + x2 = 212.1064

Factor a perfect square on the left side:
(x + 10.08)(x + 10.08) = 212.1064

Calculate the square root of the right side: 14.563873111

Break this problem into two subproblems by setting 
(x + 10.08) equal to 14.563873111 and -14.563873111.

Subproblem 1

x + 10.08 = 14.563873111 Simplifying x + 10.08 = 14.563873111 Reorder the terms: 10.08 + x = 14.563873111 Solving 10.08 + x = 14.563873111 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10.08' to each side of the equation. 10.08 + -10.08 + x = 14.563873111 + -10.08 Combine like terms: 10.08 + -10.08 = 0.00 0.00 + x = 14.563873111 + -10.08 x = 14.563873111 + -10.08 Combine like terms: 14.563873111 + -10.08 = 4.483873111 x = 4.483873111 Simplifying x = 4.483873111

Subproblem 2

x + 10.08 = -14.563873111 Simplifying x + 10.08 = -14.563873111 Reorder the terms: 10.08 + x = -14.563873111 Solving 10.08 + x = -14.563873111 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-10.08' to each side of the equation. 10.08 + -10.08 + x = -14.563873111 + -10.08 Combine like terms: 10.08 + -10.08 = 0.00 0.00 + x = -14.563873111 + -10.08 x = -14.563873111 + -10.08 Combine like terms: -14.563873111 + -10.08 = -24.643873111 x = -24.643873111 Simplifying x = -24.643873111

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.483873111, -24.643873111}

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