(-2u^2+3u)+(-6u^2-4u+1)=

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Solution for (-2u^2+3u)+(-6u^2-4u+1)= equation:


Simplifying
(-2u2 + 3u) + (-6u2 + -4u + 1) = 0

Reorder the terms:
(3u + -2u2) + (-6u2 + -4u + 1) = 0

Remove parenthesis around (3u + -2u2)
3u + -2u2 + (-6u2 + -4u + 1) = 0

Reorder the terms:
3u + -2u2 + (1 + -4u + -6u2) = 0

Remove parenthesis around (1 + -4u + -6u2)
3u + -2u2 + 1 + -4u + -6u2 = 0

Reorder the terms:
1 + 3u + -4u + -2u2 + -6u2 = 0

Combine like terms: 3u + -4u = -1u
1 + -1u + -2u2 + -6u2 = 0

Combine like terms: -2u2 + -6u2 = -8u2
1 + -1u + -8u2 = 0

Solving
1 + -1u + -8u2 = 0

Solving for variable 'u'.

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
-0.125 + 0.125u + u2 = 0

Move the constant term to the right:

Add '0.125' to each side of the equation.
-0.125 + 0.125u + 0.125 + u2 = 0 + 0.125

Reorder the terms:
-0.125 + 0.125 + 0.125u + u2 = 0 + 0.125

Combine like terms: -0.125 + 0.125 = 0.000
0.000 + 0.125u + u2 = 0 + 0.125
0.125u + u2 = 0 + 0.125

Combine like terms: 0 + 0.125 = 0.125
0.125u + u2 = 0.125

The u term is 0.125u.  Take half its coefficient (0.0625).
Square it (0.00390625) and add it to both sides.

Add '0.00390625' to each side of the equation.
0.125u + 0.00390625 + u2 = 0.125 + 0.00390625

Reorder the terms:
0.00390625 + 0.125u + u2 = 0.125 + 0.00390625

Combine like terms: 0.125 + 0.00390625 = 0.12890625
0.00390625 + 0.125u + u2 = 0.12890625

Factor a perfect square on the left side:
(u + 0.0625)(u + 0.0625) = 0.12890625

Calculate the square root of the right side: 0.359035165

Break this problem into two subproblems by setting 
(u + 0.0625) equal to 0.359035165 and -0.359035165.

Subproblem 1

u + 0.0625 = 0.359035165 Simplifying u + 0.0625 = 0.359035165 Reorder the terms: 0.0625 + u = 0.359035165 Solving 0.0625 + u = 0.359035165 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-0.0625' to each side of the equation. 0.0625 + -0.0625 + u = 0.359035165 + -0.0625 Combine like terms: 0.0625 + -0.0625 = 0.0000 0.0000 + u = 0.359035165 + -0.0625 u = 0.359035165 + -0.0625 Combine like terms: 0.359035165 + -0.0625 = 0.296535165 u = 0.296535165 Simplifying u = 0.296535165

Subproblem 2

u + 0.0625 = -0.359035165 Simplifying u + 0.0625 = -0.359035165 Reorder the terms: 0.0625 + u = -0.359035165 Solving 0.0625 + u = -0.359035165 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '-0.0625' to each side of the equation. 0.0625 + -0.0625 + u = -0.359035165 + -0.0625 Combine like terms: 0.0625 + -0.0625 = 0.0000 0.0000 + u = -0.359035165 + -0.0625 u = -0.359035165 + -0.0625 Combine like terms: -0.359035165 + -0.0625 = -0.421535165 u = -0.421535165 Simplifying u = -0.421535165

Solution

The solution to the problem is based on the solutions from the subproblems. u = {0.296535165, -0.421535165}

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