u^2-4=2u^2+2u-3

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Solution for u^2-4=2u^2+2u-3 equation:


Simplifying
u2 + -4 = 2u2 + 2u + -3

Reorder the terms:
-4 + u2 = 2u2 + 2u + -3

Reorder the terms:
-4 + u2 = -3 + 2u + 2u2

Solving
-4 + u2 = -3 + 2u + 2u2

Solving for variable 'u'.

Reorder the terms:
-4 + 3 + -2u + u2 + -2u2 = -3 + 2u + 2u2 + 3 + -2u + -2u2

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

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

Reorder the terms:
-1 + -2u + -1u2 = -3 + 3 + 2u + -2u + 2u2 + -2u2

Combine like terms: -3 + 3 = 0
-1 + -2u + -1u2 = 0 + 2u + -2u + 2u2 + -2u2
-1 + -2u + -1u2 = 2u + -2u + 2u2 + -2u2

Combine like terms: 2u + -2u = 0
-1 + -2u + -1u2 = 0 + 2u2 + -2u2
-1 + -2u + -1u2 = 2u2 + -2u2

Combine like terms: 2u2 + -2u2 = 0
-1 + -2u + -1u2 = 0

Factor out the Greatest Common Factor (GCF), '-1'.
-1(1 + 2u + u2) = 0

Factor a trinomial.
-1((1 + u)(1 + u)) = 0

Ignore the factor -1.

Subproblem 1

Set the factor '(1 + u)' equal to zero and attempt to solve: Simplifying 1 + u = 0 Solving 1 + u = 0 Move all terms containing u to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + u = 0 + -1 Combine like terms: 1 + -1 = 0 0 + u = 0 + -1 u = 0 + -1 Combine like terms: 0 + -1 = -1 u = -1 Simplifying u = -1

Subproblem 2

Set the factor '(1 + u)' equal to zero and attempt to solve: Simplifying 1 + u = 0 Solving 1 + u = 0 Move all terms containing u to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + u = 0 + -1 Combine like terms: 1 + -1 = 0 0 + u = 0 + -1 u = 0 + -1 Combine like terms: 0 + -1 = -1 u = -1 Simplifying u = -1

Solution

u = {-1, -1}

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