(2u^2-9u+5)-(6u^2-3u-2)+(9u^2-9u+6)=

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Solution for (2u^2-9u+5)-(6u^2-3u-2)+(9u^2-9u+6)= equation:


Simplifying
(2u2 + -9u + 5) + -1(6u2 + -3u + -2) + (9u2 + -9u + 6) = 0

Reorder the terms:
(5 + -9u + 2u2) + -1(6u2 + -3u + -2) + (9u2 + -9u + 6) = 0

Remove parenthesis around (5 + -9u + 2u2)
5 + -9u + 2u2 + -1(6u2 + -3u + -2) + (9u2 + -9u + 6) = 0

Reorder the terms:
5 + -9u + 2u2 + -1(-2 + -3u + 6u2) + (9u2 + -9u + 6) = 0
5 + -9u + 2u2 + (-2 * -1 + -3u * -1 + 6u2 * -1) + (9u2 + -9u + 6) = 0
5 + -9u + 2u2 + (2 + 3u + -6u2) + (9u2 + -9u + 6) = 0

Reorder the terms:
5 + -9u + 2u2 + 2 + 3u + -6u2 + (6 + -9u + 9u2) = 0

Remove parenthesis around (6 + -9u + 9u2)
5 + -9u + 2u2 + 2 + 3u + -6u2 + 6 + -9u + 9u2 = 0

Reorder the terms:
5 + 2 + 6 + -9u + 3u + -9u + 2u2 + -6u2 + 9u2 = 0

Combine like terms: 5 + 2 = 7
7 + 6 + -9u + 3u + -9u + 2u2 + -6u2 + 9u2 = 0

Combine like terms: 7 + 6 = 13
13 + -9u + 3u + -9u + 2u2 + -6u2 + 9u2 = 0

Combine like terms: -9u + 3u = -6u
13 + -6u + -9u + 2u2 + -6u2 + 9u2 = 0

Combine like terms: -6u + -9u = -15u
13 + -15u + 2u2 + -6u2 + 9u2 = 0

Combine like terms: 2u2 + -6u2 = -4u2
13 + -15u + -4u2 + 9u2 = 0

Combine like terms: -4u2 + 9u2 = 5u2
13 + -15u + 5u2 = 0

Solving
13 + -15u + 5u2 = 0

Solving for variable 'u'.

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

Divide each side by '5'.
2.6 + -3u + u2 = 0

Move the constant term to the right:

Add '-2.6' to each side of the equation.
2.6 + -3u + -2.6 + u2 = 0 + -2.6

Reorder the terms:
2.6 + -2.6 + -3u + u2 = 0 + -2.6

Combine like terms: 2.6 + -2.6 = 0.0
0.0 + -3u + u2 = 0 + -2.6
-3u + u2 = 0 + -2.6

Combine like terms: 0 + -2.6 = -2.6
-3u + u2 = -2.6

The u term is -3u.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3u + 2.25 + u2 = -2.6 + 2.25

Reorder the terms:
2.25 + -3u + u2 = -2.6 + 2.25

Combine like terms: -2.6 + 2.25 = -0.35
2.25 + -3u + u2 = -0.35

Factor a perfect square on the left side:
(u + -1.5)(u + -1.5) = -0.35

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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