x^2-9x=x-28

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Solution for x^2-9x=x-28 equation:


Simplifying
x2 + -9x = x + -28

Reorder the terms:
-9x + x2 = x + -28

Reorder the terms:
-9x + x2 = -28 + x

Solving
-9x + x2 = -28 + x

Solving for variable 'x'.

Reorder the terms:
28 + -9x + -1x + x2 = -28 + x + 28 + -1x

Combine like terms: -9x + -1x = -10x
28 + -10x + x2 = -28 + x + 28 + -1x

Reorder the terms:
28 + -10x + x2 = -28 + 28 + x + -1x

Combine like terms: -28 + 28 = 0
28 + -10x + x2 = 0 + x + -1x
28 + -10x + x2 = x + -1x

Combine like terms: x + -1x = 0
28 + -10x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-28' to each side of the equation.
28 + -10x + -28 + x2 = 0 + -28

Reorder the terms:
28 + -28 + -10x + x2 = 0 + -28

Combine like terms: 28 + -28 = 0
0 + -10x + x2 = 0 + -28
-10x + x2 = 0 + -28

Combine like terms: 0 + -28 = -28
-10x + x2 = -28

The x term is -10x.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10x + 25 + x2 = -28 + 25

Reorder the terms:
25 + -10x + x2 = -28 + 25

Combine like terms: -28 + 25 = -3
25 + -10x + x2 = -3

Factor a perfect square on the left side:
(x + -5)(x + -5) = -3

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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