x^2+30x+255=17(x+5)

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Solution for x^2+30x+255=17(x+5) equation:


Simplifying
x2 + 30x + 255 = 17(x + 5)

Reorder the terms:
255 + 30x + x2 = 17(x + 5)

Reorder the terms:
255 + 30x + x2 = 17(5 + x)
255 + 30x + x2 = (5 * 17 + x * 17)
255 + 30x + x2 = (85 + 17x)

Solving
255 + 30x + x2 = 85 + 17x

Solving for variable 'x'.

Reorder the terms:
255 + -85 + 30x + -17x + x2 = 85 + 17x + -85 + -17x

Combine like terms: 255 + -85 = 170
170 + 30x + -17x + x2 = 85 + 17x + -85 + -17x

Combine like terms: 30x + -17x = 13x
170 + 13x + x2 = 85 + 17x + -85 + -17x

Reorder the terms:
170 + 13x + x2 = 85 + -85 + 17x + -17x

Combine like terms: 85 + -85 = 0
170 + 13x + x2 = 0 + 17x + -17x
170 + 13x + x2 = 17x + -17x

Combine like terms: 17x + -17x = 0
170 + 13x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-170' to each side of the equation.
170 + 13x + -170 + x2 = 0 + -170

Reorder the terms:
170 + -170 + 13x + x2 = 0 + -170

Combine like terms: 170 + -170 = 0
0 + 13x + x2 = 0 + -170
13x + x2 = 0 + -170

Combine like terms: 0 + -170 = -170
13x + x2 = -170

The x term is 13x.  Take half its coefficient (6.5).
Square it (42.25) and add it to both sides.

Add '42.25' to each side of the equation.
13x + 42.25 + x2 = -170 + 42.25

Reorder the terms:
42.25 + 13x + x2 = -170 + 42.25

Combine like terms: -170 + 42.25 = -127.75
42.25 + 13x + x2 = -127.75

Factor a perfect square on the left side:
(x + 6.5)(x + 6.5) = -127.75

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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