2u^2-19u+35=9

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Solution for 2u^2-19u+35=9 equation:


Simplifying
2u2 + -19u + 35 = 9

Reorder the terms:
35 + -19u + 2u2 = 9

Solving
35 + -19u + 2u2 = 9

Solving for variable 'u'.

Reorder the terms:
35 + -9 + -19u + 2u2 = 9 + -9

Combine like terms: 35 + -9 = 26
26 + -19u + 2u2 = 9 + -9

Combine like terms: 9 + -9 = 0
26 + -19u + 2u2 = 0

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

Divide each side by '2'.
13 + -9.5u + u2 = 0

Move the constant term to the right:

Add '-13' to each side of the equation.
13 + -9.5u + -13 + u2 = 0 + -13

Reorder the terms:
13 + -13 + -9.5u + u2 = 0 + -13

Combine like terms: 13 + -13 = 0
0 + -9.5u + u2 = 0 + -13
-9.5u + u2 = 0 + -13

Combine like terms: 0 + -13 = -13
-9.5u + u2 = -13

The u term is -9.5u.  Take half its coefficient (-4.75).
Square it (22.5625) and add it to both sides.

Add '22.5625' to each side of the equation.
-9.5u + 22.5625 + u2 = -13 + 22.5625

Reorder the terms:
22.5625 + -9.5u + u2 = -13 + 22.5625

Combine like terms: -13 + 22.5625 = 9.5625
22.5625 + -9.5u + u2 = 9.5625

Factor a perfect square on the left side:
(u + -4.75)(u + -4.75) = 9.5625

Calculate the square root of the right side: 3.092329219

Break this problem into two subproblems by setting 
(u + -4.75) equal to 3.092329219 and -3.092329219.

Subproblem 1

u + -4.75 = 3.092329219 Simplifying u + -4.75 = 3.092329219 Reorder the terms: -4.75 + u = 3.092329219 Solving -4.75 + u = 3.092329219 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + u = 3.092329219 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + u = 3.092329219 + 4.75 u = 3.092329219 + 4.75 Combine like terms: 3.092329219 + 4.75 = 7.842329219 u = 7.842329219 Simplifying u = 7.842329219

Subproblem 2

u + -4.75 = -3.092329219 Simplifying u + -4.75 = -3.092329219 Reorder the terms: -4.75 + u = -3.092329219 Solving -4.75 + u = -3.092329219 Solving for variable 'u'. Move all terms containing u to the left, all other terms to the right. Add '4.75' to each side of the equation. -4.75 + 4.75 + u = -3.092329219 + 4.75 Combine like terms: -4.75 + 4.75 = 0.00 0.00 + u = -3.092329219 + 4.75 u = -3.092329219 + 4.75 Combine like terms: -3.092329219 + 4.75 = 1.657670781 u = 1.657670781 Simplifying u = 1.657670781

Solution

The solution to the problem is based on the solutions from the subproblems. u = {7.842329219, 1.657670781}

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