(x+20)*(x+20)=14

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Solution for (x+20)*(x+20)=14 equation:


Simplifying
(x + 20)(x + 20) = 14

Reorder the terms:
(20 + x)(x + 20) = 14

Reorder the terms:
(20 + x)(20 + x) = 14

Multiply (20 + x) * (20 + x)
(20(20 + x) + x(20 + x)) = 14
((20 * 20 + x * 20) + x(20 + x)) = 14
((400 + 20x) + x(20 + x)) = 14
(400 + 20x + (20 * x + x * x)) = 14
(400 + 20x + (20x + x2)) = 14

Combine like terms: 20x + 20x = 40x
(400 + 40x + x2) = 14

Solving
400 + 40x + x2 = 14

Solving for variable 'x'.

Reorder the terms:
400 + -14 + 40x + x2 = 14 + -14

Combine like terms: 400 + -14 = 386
386 + 40x + x2 = 14 + -14

Combine like terms: 14 + -14 = 0
386 + 40x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-386' to each side of the equation.
386 + 40x + -386 + x2 = 0 + -386

Reorder the terms:
386 + -386 + 40x + x2 = 0 + -386

Combine like terms: 386 + -386 = 0
0 + 40x + x2 = 0 + -386
40x + x2 = 0 + -386

Combine like terms: 0 + -386 = -386
40x + x2 = -386

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 = -386 + 400

Reorder the terms:
400 + 40x + x2 = -386 + 400

Combine like terms: -386 + 400 = 14
400 + 40x + x2 = 14

Factor a perfect square on the left side:
(x + 20)(x + 20) = 14

Calculate the square root of the right side: 3.741657387

Break this problem into two subproblems by setting 
(x + 20) equal to 3.741657387 and -3.741657387.

Subproblem 1

x + 20 = 3.741657387 Simplifying x + 20 = 3.741657387 Reorder the terms: 20 + x = 3.741657387 Solving 20 + x = 3.741657387 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 = 3.741657387 + -20 Combine like terms: 20 + -20 = 0 0 + x = 3.741657387 + -20 x = 3.741657387 + -20 Combine like terms: 3.741657387 + -20 = -16.258342613 x = -16.258342613 Simplifying x = -16.258342613

Subproblem 2

x + 20 = -3.741657387 Simplifying x + 20 = -3.741657387 Reorder the terms: 20 + x = -3.741657387 Solving 20 + x = -3.741657387 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 = -3.741657387 + -20 Combine like terms: 20 + -20 = 0 0 + x = -3.741657387 + -20 x = -3.741657387 + -20 Combine like terms: -3.741657387 + -20 = -23.741657387 x = -23.741657387 Simplifying x = -23.741657387

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-16.258342613, -23.741657387}

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