(6+x+4)*(x+6)=300

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Solution for (6+x+4)*(x+6)=300 equation:


Simplifying
(6 + x + 4)(x + 6) = 300

Reorder the terms:
(6 + 4 + x)(x + 6) = 300

Combine like terms: 6 + 4 = 10
(10 + x)(x + 6) = 300

Reorder the terms:
(10 + x)(6 + x) = 300

Multiply (10 + x) * (6 + x)
(10(6 + x) + x(6 + x)) = 300
((6 * 10 + x * 10) + x(6 + x)) = 300
((60 + 10x) + x(6 + x)) = 300
(60 + 10x + (6 * x + x * x)) = 300
(60 + 10x + (6x + x2)) = 300

Combine like terms: 10x + 6x = 16x
(60 + 16x + x2) = 300

Solving
60 + 16x + x2 = 300

Solving for variable 'x'.

Reorder the terms:
60 + -300 + 16x + x2 = 300 + -300

Combine like terms: 60 + -300 = -240
-240 + 16x + x2 = 300 + -300

Combine like terms: 300 + -300 = 0
-240 + 16x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '240' to each side of the equation.
-240 + 16x + 240 + x2 = 0 + 240

Reorder the terms:
-240 + 240 + 16x + x2 = 0 + 240

Combine like terms: -240 + 240 = 0
0 + 16x + x2 = 0 + 240
16x + x2 = 0 + 240

Combine like terms: 0 + 240 = 240
16x + x2 = 240

The x term is 16x.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16x + 64 + x2 = 240 + 64

Reorder the terms:
64 + 16x + x2 = 240 + 64

Combine like terms: 240 + 64 = 304
64 + 16x + x2 = 304

Factor a perfect square on the left side:
(x + 8)(x + 8) = 304

Calculate the square root of the right side: 17.435595774

Break this problem into two subproblems by setting 
(x + 8) equal to 17.435595774 and -17.435595774.

Subproblem 1

x + 8 = 17.435595774 Simplifying x + 8 = 17.435595774 Reorder the terms: 8 + x = 17.435595774 Solving 8 + x = 17.435595774 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 17.435595774 + -8 Combine like terms: 8 + -8 = 0 0 + x = 17.435595774 + -8 x = 17.435595774 + -8 Combine like terms: 17.435595774 + -8 = 9.435595774 x = 9.435595774 Simplifying x = 9.435595774

Subproblem 2

x + 8 = -17.435595774 Simplifying x + 8 = -17.435595774 Reorder the terms: 8 + x = -17.435595774 Solving 8 + x = -17.435595774 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = -17.435595774 + -8 Combine like terms: 8 + -8 = 0 0 + x = -17.435595774 + -8 x = -17.435595774 + -8 Combine like terms: -17.435595774 + -8 = -25.435595774 x = -25.435595774 Simplifying x = -25.435595774

Solution

The solution to the problem is based on the solutions from the subproblems. x = {9.435595774, -25.435595774}

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