(u-4)(u-4)+8=0

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Solution for (u-4)(u-4)+8=0 equation:


Simplifying
(u + -4)(u + -4) + 8 = 0

Reorder the terms:
(-4 + u)(u + -4) + 8 = 0

Reorder the terms:
(-4 + u)(-4 + u) + 8 = 0

Multiply (-4 + u) * (-4 + u)
(-4(-4 + u) + u(-4 + u)) + 8 = 0
((-4 * -4 + u * -4) + u(-4 + u)) + 8 = 0
((16 + -4u) + u(-4 + u)) + 8 = 0
(16 + -4u + (-4 * u + u * u)) + 8 = 0
(16 + -4u + (-4u + u2)) + 8 = 0

Combine like terms: -4u + -4u = -8u
(16 + -8u + u2) + 8 = 0

Reorder the terms:
16 + 8 + -8u + u2 = 0

Combine like terms: 16 + 8 = 24
24 + -8u + u2 = 0

Solving
24 + -8u + u2 = 0

Solving for variable 'u'.

Begin completing the square.

Move the constant term to the right:

Add '-24' to each side of the equation.
24 + -8u + -24 + u2 = 0 + -24

Reorder the terms:
24 + -24 + -8u + u2 = 0 + -24

Combine like terms: 24 + -24 = 0
0 + -8u + u2 = 0 + -24
-8u + u2 = 0 + -24

Combine like terms: 0 + -24 = -24
-8u + u2 = -24

The u term is -8u.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8u + 16 + u2 = -24 + 16

Reorder the terms:
16 + -8u + u2 = -24 + 16

Combine like terms: -24 + 16 = -8
16 + -8u + u2 = -8

Factor a perfect square on the left side:
(u + -4)(u + -4) = -8

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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