40x-x^2+1=0

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Solution for 40x-x^2+1=0 equation:


Simplifying
40x + -1x2 + 1 = 0

Reorder the terms:
1 + 40x + -1x2 = 0

Solving
1 + 40x + -1x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
-1 + -40x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -40x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + -40x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -40x + x2 = 0 + 1
-40x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
-40x + x2 = 1

The x term is -40x.  Take half its coefficient (-20).
Square it (400) and add it to both sides.

Add '400' to each side of the equation.
-40x + 400 + x2 = 1 + 400

Reorder the terms:
400 + -40x + x2 = 1 + 400

Combine like terms: 1 + 400 = 401
400 + -40x + x2 = 401

Factor a perfect square on the left side:
(x + -20)(x + -20) = 401

Calculate the square root of the right side: 20.024984395

Break this problem into two subproblems by setting 
(x + -20) equal to 20.024984395 and -20.024984395.

Subproblem 1

x + -20 = 20.024984395 Simplifying x + -20 = 20.024984395 Reorder the terms: -20 + x = 20.024984395 Solving -20 + x = 20.024984395 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '20' to each side of the equation. -20 + 20 + x = 20.024984395 + 20 Combine like terms: -20 + 20 = 0 0 + x = 20.024984395 + 20 x = 20.024984395 + 20 Combine like terms: 20.024984395 + 20 = 40.024984395 x = 40.024984395 Simplifying x = 40.024984395

Subproblem 2

x + -20 = -20.024984395 Simplifying x + -20 = -20.024984395 Reorder the terms: -20 + x = -20.024984395 Solving -20 + x = -20.024984395 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '20' to each side of the equation. -20 + 20 + x = -20.024984395 + 20 Combine like terms: -20 + 20 = 0 0 + x = -20.024984395 + 20 x = -20.024984395 + 20 Combine like terms: -20.024984395 + 20 = -0.024984395 x = -0.024984395 Simplifying x = -0.024984395

Solution

The solution to the problem is based on the solutions from the subproblems. x = {40.024984395, -0.024984395}

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