2u^2+12u+46=u^2+7

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Solution for 2u^2+12u+46=u^2+7 equation:


Simplifying
2u2 + 12u + 46 = u2 + 7

Reorder the terms:
46 + 12u + 2u2 = u2 + 7

Reorder the terms:
46 + 12u + 2u2 = 7 + u2

Solving
46 + 12u + 2u2 = 7 + u2

Solving for variable 'u'.

Reorder the terms:
46 + -7 + 12u + 2u2 + -1u2 = 7 + u2 + -7 + -1u2

Combine like terms: 46 + -7 = 39
39 + 12u + 2u2 + -1u2 = 7 + u2 + -7 + -1u2

Combine like terms: 2u2 + -1u2 = 1u2
39 + 12u + 1u2 = 7 + u2 + -7 + -1u2

Reorder the terms:
39 + 12u + 1u2 = 7 + -7 + u2 + -1u2

Combine like terms: 7 + -7 = 0
39 + 12u + 1u2 = 0 + u2 + -1u2
39 + 12u + 1u2 = u2 + -1u2

Combine like terms: u2 + -1u2 = 0
39 + 12u + 1u2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-39' to each side of the equation.
39 + 12u + -39 + u2 = 0 + -39

Reorder the terms:
39 + -39 + 12u + u2 = 0 + -39

Combine like terms: 39 + -39 = 0
0 + 12u + u2 = 0 + -39
12u + u2 = 0 + -39

Combine like terms: 0 + -39 = -39
12u + u2 = -39

The u term is 12u.  Take half its coefficient (6).
Square it (36) and add it to both sides.

Add '36' to each side of the equation.
12u + 36 + u2 = -39 + 36

Reorder the terms:
36 + 12u + u2 = -39 + 36

Combine like terms: -39 + 36 = -3
36 + 12u + u2 = -3

Factor a perfect square on the left side:
(u + 6)(u + 6) = -3

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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