(3u^2-6u-2)+(7u^2-4u+5)=

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Solution for (3u^2-6u-2)+(7u^2-4u+5)= equation:


Simplifying
(3u2 + -6u + -2) + (7u2 + -4u + 5) = 0

Reorder the terms:
(-2 + -6u + 3u2) + (7u2 + -4u + 5) = 0

Remove parenthesis around (-2 + -6u + 3u2)
-2 + -6u + 3u2 + (7u2 + -4u + 5) = 0

Reorder the terms:
-2 + -6u + 3u2 + (5 + -4u + 7u2) = 0

Remove parenthesis around (5 + -4u + 7u2)
-2 + -6u + 3u2 + 5 + -4u + 7u2 = 0

Reorder the terms:
-2 + 5 + -6u + -4u + 3u2 + 7u2 = 0

Combine like terms: -2 + 5 = 3
3 + -6u + -4u + 3u2 + 7u2 = 0

Combine like terms: -6u + -4u = -10u
3 + -10u + 3u2 + 7u2 = 0

Combine like terms: 3u2 + 7u2 = 10u2
3 + -10u + 10u2 = 0

Solving
3 + -10u + 10u2 = 0

Solving for variable 'u'.

Begin completing the square.  Divide all terms by
10 the coefficient of the squared term: 

Divide each side by '10'.
0.3 + -1u + u2 = 0.0

Move the constant term to the right:

Add '-0.3' to each side of the equation.
0.3 + -1u + -0.3 + u2 = 0.0 + -0.3

Reorder the terms:
0.3 + -0.3 + -1u + u2 = 0.0 + -0.3

Combine like terms: 0.3 + -0.3 = 0.0
0.0 + -1u + u2 = 0.0 + -0.3
-1u + u2 = 0.0 + -0.3

Combine like terms: 0.0 + -0.3 = -0.3
-1u + u2 = -0.3

The u term is -1u.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1u + 0.25 + u2 = -0.3 + 0.25

Reorder the terms:
0.25 + -1u + u2 = -0.3 + 0.25

Combine like terms: -0.3 + 0.25 = -0.05
0.25 + -1u + u2 = -0.05

Factor a perfect square on the left side:
(u + -0.5)(u + -0.5) = -0.05

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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