(4w-8)-(w^2-9w+3)=

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Solution for (4w-8)-(w^2-9w+3)= equation:


Simplifying
(4w + -8) + -1(w2 + -9w + 3) = 0

Reorder the terms:
(-8 + 4w) + -1(w2 + -9w + 3) = 0

Remove parenthesis around (-8 + 4w)
-8 + 4w + -1(w2 + -9w + 3) = 0

Reorder the terms:
-8 + 4w + -1(3 + -9w + w2) = 0
-8 + 4w + (3 * -1 + -9w * -1 + w2 * -1) = 0
-8 + 4w + (-3 + 9w + -1w2) = 0

Reorder the terms:
-8 + -3 + 4w + 9w + -1w2 = 0

Combine like terms: -8 + -3 = -11
-11 + 4w + 9w + -1w2 = 0

Combine like terms: 4w + 9w = 13w
-11 + 13w + -1w2 = 0

Solving
-11 + 13w + -1w2 = 0

Solving for variable 'w'.

Begin completing the square.  Divide all terms by
-1 the coefficient of the squared term: 

Divide each side by '-1'.
11 + -13w + w2 = 0

Move the constant term to the right:

Add '-11' to each side of the equation.
11 + -13w + -11 + w2 = 0 + -11

Reorder the terms:
11 + -11 + -13w + w2 = 0 + -11

Combine like terms: 11 + -11 = 0
0 + -13w + w2 = 0 + -11
-13w + w2 = 0 + -11

Combine like terms: 0 + -11 = -11
-13w + w2 = -11

The w term is -13w.  Take half its coefficient (-6.5).
Square it (42.25) and add it to both sides.

Add '42.25' to each side of the equation.
-13w + 42.25 + w2 = -11 + 42.25

Reorder the terms:
42.25 + -13w + w2 = -11 + 42.25

Combine like terms: -11 + 42.25 = 31.25
42.25 + -13w + w2 = 31.25

Factor a perfect square on the left side:
(w + -6.5)(w + -6.5) = 31.25

Calculate the square root of the right side: 5.590169944

Break this problem into two subproblems by setting 
(w + -6.5) equal to 5.590169944 and -5.590169944.

Subproblem 1

w + -6.5 = 5.590169944 Simplifying w + -6.5 = 5.590169944 Reorder the terms: -6.5 + w = 5.590169944 Solving -6.5 + w = 5.590169944 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '6.5' to each side of the equation. -6.5 + 6.5 + w = 5.590169944 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + w = 5.590169944 + 6.5 w = 5.590169944 + 6.5 Combine like terms: 5.590169944 + 6.5 = 12.090169944 w = 12.090169944 Simplifying w = 12.090169944

Subproblem 2

w + -6.5 = -5.590169944 Simplifying w + -6.5 = -5.590169944 Reorder the terms: -6.5 + w = -5.590169944 Solving -6.5 + w = -5.590169944 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '6.5' to each side of the equation. -6.5 + 6.5 + w = -5.590169944 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + w = -5.590169944 + 6.5 w = -5.590169944 + 6.5 Combine like terms: -5.590169944 + 6.5 = 0.909830056 w = 0.909830056 Simplifying w = 0.909830056

Solution

The solution to the problem is based on the solutions from the subproblems. w = {12.090169944, 0.909830056}

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