5w^2+2w^2+25w+10=0

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Solution for 5w^2+2w^2+25w+10=0 equation:


Simplifying
5w2 + 2w2 + 25w + 10 = 0

Reorder the terms:
10 + 25w + 5w2 + 2w2 = 0

Combine like terms: 5w2 + 2w2 = 7w2
10 + 25w + 7w2 = 0

Solving
10 + 25w + 7w2 = 0

Solving for variable 'w'.

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

Divide each side by '7'.
1.428571429 + 3.571428571w + w2 = 0

Move the constant term to the right:

Add '-1.428571429' to each side of the equation.
1.428571429 + 3.571428571w + -1.428571429 + w2 = 0 + -1.428571429

Reorder the terms:
1.428571429 + -1.428571429 + 3.571428571w + w2 = 0 + -1.428571429

Combine like terms: 1.428571429 + -1.428571429 = 0.000000000
0.000000000 + 3.571428571w + w2 = 0 + -1.428571429
3.571428571w + w2 = 0 + -1.428571429

Combine like terms: 0 + -1.428571429 = -1.428571429
3.571428571w + w2 = -1.428571429

The w term is 3.571428571w.  Take half its coefficient (1.785714286).
Square it (3.188775511) and add it to both sides.

Add '3.188775511' to each side of the equation.
3.571428571w + 3.188775511 + w2 = -1.428571429 + 3.188775511

Reorder the terms:
3.188775511 + 3.571428571w + w2 = -1.428571429 + 3.188775511

Combine like terms: -1.428571429 + 3.188775511 = 1.760204082
3.188775511 + 3.571428571w + w2 = 1.760204082

Factor a perfect square on the left side:
(w + 1.785714286)(w + 1.785714286) = 1.760204082

Calculate the square root of the right side: 1.32672683

Break this problem into two subproblems by setting 
(w + 1.785714286) equal to 1.32672683 and -1.32672683.

Subproblem 1

w + 1.785714286 = 1.32672683 Simplifying w + 1.785714286 = 1.32672683 Reorder the terms: 1.785714286 + w = 1.32672683 Solving 1.785714286 + w = 1.32672683 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-1.785714286' to each side of the equation. 1.785714286 + -1.785714286 + w = 1.32672683 + -1.785714286 Combine like terms: 1.785714286 + -1.785714286 = 0.000000000 0.000000000 + w = 1.32672683 + -1.785714286 w = 1.32672683 + -1.785714286 Combine like terms: 1.32672683 + -1.785714286 = -0.458987456 w = -0.458987456 Simplifying w = -0.458987456

Subproblem 2

w + 1.785714286 = -1.32672683 Simplifying w + 1.785714286 = -1.32672683 Reorder the terms: 1.785714286 + w = -1.32672683 Solving 1.785714286 + w = -1.32672683 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-1.785714286' to each side of the equation. 1.785714286 + -1.785714286 + w = -1.32672683 + -1.785714286 Combine like terms: 1.785714286 + -1.785714286 = 0.000000000 0.000000000 + w = -1.32672683 + -1.785714286 w = -1.32672683 + -1.785714286 Combine like terms: -1.32672683 + -1.785714286 = -3.112441116 w = -3.112441116 Simplifying w = -3.112441116

Solution

The solution to the problem is based on the solutions from the subproblems. w = {-0.458987456, -3.112441116}

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