(u^2-1)=2u-5

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Solution for (u^2-1)=2u-5 equation:


Simplifying
(u2 + -1) = 2u + -5

Reorder the terms:
(-1 + u2) = 2u + -5

Remove parenthesis around (-1 + u2)
-1 + u2 = 2u + -5

Reorder the terms:
-1 + u2 = -5 + 2u

Solving
-1 + u2 = -5 + 2u

Solving for variable 'u'.

Reorder the terms:
-1 + 5 + -2u + u2 = -5 + 2u + 5 + -2u

Combine like terms: -1 + 5 = 4
4 + -2u + u2 = -5 + 2u + 5 + -2u

Reorder the terms:
4 + -2u + u2 = -5 + 5 + 2u + -2u

Combine like terms: -5 + 5 = 0
4 + -2u + u2 = 0 + 2u + -2u
4 + -2u + u2 = 2u + -2u

Combine like terms: 2u + -2u = 0
4 + -2u + u2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + -2u + -4 + u2 = 0 + -4

Reorder the terms:
4 + -4 + -2u + u2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -2u + u2 = 0 + -4
-2u + u2 = 0 + -4

Combine like terms: 0 + -4 = -4
-2u + u2 = -4

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

Add '1' to each side of the equation.
-2u + 1 + u2 = -4 + 1

Reorder the terms:
1 + -2u + u2 = -4 + 1

Combine like terms: -4 + 1 = -3
1 + -2u + u2 = -3

Factor a perfect square on the left side:
(u + -1)(u + -1) = -3

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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