(-7w^2-6w+1)+(-3w^2+2)=

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Solution for (-7w^2-6w+1)+(-3w^2+2)= equation:


Simplifying
(-7w2 + -6w + 1) + (-3w2 + 2) = 0

Reorder the terms:
(1 + -6w + -7w2) + (-3w2 + 2) = 0

Remove parenthesis around (1 + -6w + -7w2)
1 + -6w + -7w2 + (-3w2 + 2) = 0

Reorder the terms:
1 + -6w + -7w2 + (2 + -3w2) = 0

Remove parenthesis around (2 + -3w2)
1 + -6w + -7w2 + 2 + -3w2 = 0

Reorder the terms:
1 + 2 + -6w + -7w2 + -3w2 = 0

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

Combine like terms: -7w2 + -3w2 = -10w2
3 + -6w + -10w2 = 0

Solving
3 + -6w + -10w2 = 0

Solving for variable 'w'.

Begin completing the square.  Divide all terms by
-10 the coefficient of the squared term: 

Divide each side by '-10'.
-0.3 + 0.6w + w2 = 0.0

Move the constant term to the right:

Add '0.3' to each side of the equation.
-0.3 + 0.6w + 0.3 + w2 = 0.0 + 0.3

Reorder the terms:
-0.3 + 0.3 + 0.6w + w2 = 0.0 + 0.3

Combine like terms: -0.3 + 0.3 = 0.0
0.0 + 0.6w + w2 = 0.0 + 0.3
0.6w + w2 = 0.0 + 0.3

Combine like terms: 0.0 + 0.3 = 0.3
0.6w + w2 = 0.3

The w term is 0.6w.  Take half its coefficient (0.3).
Square it (0.09) and add it to both sides.

Add '0.09' to each side of the equation.
0.6w + 0.09 + w2 = 0.3 + 0.09

Reorder the terms:
0.09 + 0.6w + w2 = 0.3 + 0.09

Combine like terms: 0.3 + 0.09 = 0.39
0.09 + 0.6w + w2 = 0.39

Factor a perfect square on the left side:
(w + 0.3)(w + 0.3) = 0.39

Calculate the square root of the right side: 0.6244998

Break this problem into two subproblems by setting 
(w + 0.3) equal to 0.6244998 and -0.6244998.

Subproblem 1

w + 0.3 = 0.6244998 Simplifying w + 0.3 = 0.6244998 Reorder the terms: 0.3 + w = 0.6244998 Solving 0.3 + w = 0.6244998 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-0.3' to each side of the equation. 0.3 + -0.3 + w = 0.6244998 + -0.3 Combine like terms: 0.3 + -0.3 = 0.0 0.0 + w = 0.6244998 + -0.3 w = 0.6244998 + -0.3 Combine like terms: 0.6244998 + -0.3 = 0.3244998 w = 0.3244998 Simplifying w = 0.3244998

Subproblem 2

w + 0.3 = -0.6244998 Simplifying w + 0.3 = -0.6244998 Reorder the terms: 0.3 + w = -0.6244998 Solving 0.3 + w = -0.6244998 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-0.3' to each side of the equation. 0.3 + -0.3 + w = -0.6244998 + -0.3 Combine like terms: 0.3 + -0.3 = 0.0 0.0 + w = -0.6244998 + -0.3 w = -0.6244998 + -0.3 Combine like terms: -0.6244998 + -0.3 = -0.9244998 w = -0.9244998 Simplifying w = -0.9244998

Solution

The solution to the problem is based on the solutions from the subproblems. w = {0.3244998, -0.9244998}

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