(-3w^2+8w+1)+(-8w^2-7w-3)-(-9w^2+9w-3)=

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Solution for (-3w^2+8w+1)+(-8w^2-7w-3)-(-9w^2+9w-3)= equation:


Simplifying
(-3w2 + 8w + 1) + (-8w2 + -7w + -3) + -1(-9w2 + 9w + -3) = 0

Reorder the terms:
(1 + 8w + -3w2) + (-8w2 + -7w + -3) + -1(-9w2 + 9w + -3) = 0

Remove parenthesis around (1 + 8w + -3w2)
1 + 8w + -3w2 + (-8w2 + -7w + -3) + -1(-9w2 + 9w + -3) = 0

Reorder the terms:
1 + 8w + -3w2 + (-3 + -7w + -8w2) + -1(-9w2 + 9w + -3) = 0

Remove parenthesis around (-3 + -7w + -8w2)
1 + 8w + -3w2 + -3 + -7w + -8w2 + -1(-9w2 + 9w + -3) = 0

Reorder the terms:
1 + 8w + -3w2 + -3 + -7w + -8w2 + -1(-3 + 9w + -9w2) = 0
1 + 8w + -3w2 + -3 + -7w + -8w2 + (-3 * -1 + 9w * -1 + -9w2 * -1) = 0
1 + 8w + -3w2 + -3 + -7w + -8w2 + (3 + -9w + 9w2) = 0

Reorder the terms:
1 + -3 + 3 + 8w + -7w + -9w + -3w2 + -8w2 + 9w2 = 0

Combine like terms: 1 + -3 = -2
-2 + 3 + 8w + -7w + -9w + -3w2 + -8w2 + 9w2 = 0

Combine like terms: -2 + 3 = 1
1 + 8w + -7w + -9w + -3w2 + -8w2 + 9w2 = 0

Combine like terms: 8w + -7w = 1w
1 + 1w + -9w + -3w2 + -8w2 + 9w2 = 0

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

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

Combine like terms: -11w2 + 9w2 = -2w2
1 + -8w + -2w2 = 0

Solving
1 + -8w + -2w2 = 0

Solving for variable 'w'.

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

Divide each side by '-2'.
-0.5 + 4w + w2 = 0

Move the constant term to the right:

Add '0.5' to each side of the equation.
-0.5 + 4w + 0.5 + w2 = 0 + 0.5

Reorder the terms:
-0.5 + 0.5 + 4w + w2 = 0 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + 4w + w2 = 0 + 0.5
4w + w2 = 0 + 0.5

Combine like terms: 0 + 0.5 = 0.5
4w + w2 = 0.5

The w term is 4w.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4w + 4 + w2 = 0.5 + 4

Reorder the terms:
4 + 4w + w2 = 0.5 + 4

Combine like terms: 0.5 + 4 = 4.5
4 + 4w + w2 = 4.5

Factor a perfect square on the left side:
(w + 2)(w + 2) = 4.5

Calculate the square root of the right side: 2.121320344

Break this problem into two subproblems by setting 
(w + 2) equal to 2.121320344 and -2.121320344.

Subproblem 1

w + 2 = 2.121320344 Simplifying w + 2 = 2.121320344 Reorder the terms: 2 + w = 2.121320344 Solving 2 + w = 2.121320344 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + w = 2.121320344 + -2 Combine like terms: 2 + -2 = 0 0 + w = 2.121320344 + -2 w = 2.121320344 + -2 Combine like terms: 2.121320344 + -2 = 0.121320344 w = 0.121320344 Simplifying w = 0.121320344

Subproblem 2

w + 2 = -2.121320344 Simplifying w + 2 = -2.121320344 Reorder the terms: 2 + w = -2.121320344 Solving 2 + w = -2.121320344 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + w = -2.121320344 + -2 Combine like terms: 2 + -2 = 0 0 + w = -2.121320344 + -2 w = -2.121320344 + -2 Combine like terms: -2.121320344 + -2 = -4.121320344 w = -4.121320344 Simplifying w = -4.121320344

Solution

The solution to the problem is based on the solutions from the subproblems. w = {0.121320344, -4.121320344}

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