(x-1)(x-1)+15=-1

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Solution for (x-1)(x-1)+15=-1 equation:


Simplifying
(x + -1)(x + -1) + 15 = -1

Reorder the terms:
(-1 + x)(x + -1) + 15 = -1

Reorder the terms:
(-1 + x)(-1 + x) + 15 = -1

Multiply (-1 + x) * (-1 + x)
(-1(-1 + x) + x(-1 + x)) + 15 = -1
((-1 * -1 + x * -1) + x(-1 + x)) + 15 = -1
((1 + -1x) + x(-1 + x)) + 15 = -1
(1 + -1x + (-1 * x + x * x)) + 15 = -1
(1 + -1x + (-1x + x2)) + 15 = -1

Combine like terms: -1x + -1x = -2x
(1 + -2x + x2) + 15 = -1

Reorder the terms:
1 + 15 + -2x + x2 = -1

Combine like terms: 1 + 15 = 16
16 + -2x + x2 = -1

Solving
16 + -2x + x2 = -1

Solving for variable 'x'.

Reorder the terms:
16 + 1 + -2x + x2 = -1 + 1

Combine like terms: 16 + 1 = 17
17 + -2x + x2 = -1 + 1

Combine like terms: -1 + 1 = 0
17 + -2x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-17' to each side of the equation.
17 + -2x + -17 + x2 = 0 + -17

Reorder the terms:
17 + -17 + -2x + x2 = 0 + -17

Combine like terms: 17 + -17 = 0
0 + -2x + x2 = 0 + -17
-2x + x2 = 0 + -17

Combine like terms: 0 + -17 = -17
-2x + x2 = -17

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -17 + 1

Reorder the terms:
1 + -2x + x2 = -17 + 1

Combine like terms: -17 + 1 = -16
1 + -2x + x2 = -16

Factor a perfect square on the left side:
(x + -1)(x + -1) = -16

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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