(x+4)(x+12)-5x=0

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Solution for (x+4)(x+12)-5x=0 equation:


Simplifying
(x + 4)(x + 12) + -5x = 0

Reorder the terms:
(4 + x)(x + 12) + -5x = 0

Reorder the terms:
(4 + x)(12 + x) + -5x = 0

Multiply (4 + x) * (12 + x)
(4(12 + x) + x(12 + x)) + -5x = 0
((12 * 4 + x * 4) + x(12 + x)) + -5x = 0
((48 + 4x) + x(12 + x)) + -5x = 0
(48 + 4x + (12 * x + x * x)) + -5x = 0
(48 + 4x + (12x + x2)) + -5x = 0

Combine like terms: 4x + 12x = 16x
(48 + 16x + x2) + -5x = 0

Reorder the terms:
48 + 16x + -5x + x2 = 0

Combine like terms: 16x + -5x = 11x
48 + 11x + x2 = 0

Solving
48 + 11x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-48' to each side of the equation.
48 + 11x + -48 + x2 = 0 + -48

Reorder the terms:
48 + -48 + 11x + x2 = 0 + -48

Combine like terms: 48 + -48 = 0
0 + 11x + x2 = 0 + -48
11x + x2 = 0 + -48

Combine like terms: 0 + -48 = -48
11x + x2 = -48

The x term is 11x.  Take half its coefficient (5.5).
Square it (30.25) and add it to both sides.

Add '30.25' to each side of the equation.
11x + 30.25 + x2 = -48 + 30.25

Reorder the terms:
30.25 + 11x + x2 = -48 + 30.25

Combine like terms: -48 + 30.25 = -17.75
30.25 + 11x + x2 = -17.75

Factor a perfect square on the left side:
(x + 5.5)(x + 5.5) = -17.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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