(-3w^2+6w-4)+(2w^2+7w+5)=

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Solution for (-3w^2+6w-4)+(2w^2+7w+5)= equation:


Simplifying
(-3w2 + 6w + -4) + (2w2 + 7w + 5) = 0

Reorder the terms:
(-4 + 6w + -3w2) + (2w2 + 7w + 5) = 0

Remove parenthesis around (-4 + 6w + -3w2)
-4 + 6w + -3w2 + (2w2 + 7w + 5) = 0

Reorder the terms:
-4 + 6w + -3w2 + (5 + 7w + 2w2) = 0

Remove parenthesis around (5 + 7w + 2w2)
-4 + 6w + -3w2 + 5 + 7w + 2w2 = 0

Reorder the terms:
-4 + 5 + 6w + 7w + -3w2 + 2w2 = 0

Combine like terms: -4 + 5 = 1
1 + 6w + 7w + -3w2 + 2w2 = 0

Combine like terms: 6w + 7w = 13w
1 + 13w + -3w2 + 2w2 = 0

Combine like terms: -3w2 + 2w2 = -1w2
1 + 13w + -1w2 = 0

Solving
1 + 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'.
-1 + -13w + w2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -13w + 1 + w2 = 0 + 1

Reorder the terms:
-1 + 1 + -13w + w2 = 0 + 1

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

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

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 = 1 + 42.25

Reorder the terms:
42.25 + -13w + w2 = 1 + 42.25

Combine like terms: 1 + 42.25 = 43.25
42.25 + -13w + w2 = 43.25

Factor a perfect square on the left side:
(w + -6.5)(w + -6.5) = 43.25

Calculate the square root of the right side: 6.576473219

Break this problem into two subproblems by setting 
(w + -6.5) equal to 6.576473219 and -6.576473219.

Subproblem 1

w + -6.5 = 6.576473219 Simplifying w + -6.5 = 6.576473219 Reorder the terms: -6.5 + w = 6.576473219 Solving -6.5 + w = 6.576473219 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 = 6.576473219 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + w = 6.576473219 + 6.5 w = 6.576473219 + 6.5 Combine like terms: 6.576473219 + 6.5 = 13.076473219 w = 13.076473219 Simplifying w = 13.076473219

Subproblem 2

w + -6.5 = -6.576473219 Simplifying w + -6.5 = -6.576473219 Reorder the terms: -6.5 + w = -6.576473219 Solving -6.5 + w = -6.576473219 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 = -6.576473219 + 6.5 Combine like terms: -6.5 + 6.5 = 0.0 0.0 + w = -6.576473219 + 6.5 w = -6.576473219 + 6.5 Combine like terms: -6.576473219 + 6.5 = -0.076473219 w = -0.076473219 Simplifying w = -0.076473219

Solution

The solution to the problem is based on the solutions from the subproblems. w = {13.076473219, -0.076473219}

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