3w^2+16w=864

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Solution for 3w^2+16w=864 equation:


Simplifying
3w2 + 16w = 864

Reorder the terms:
16w + 3w2 = 864

Solving
16w + 3w2 = 864

Solving for variable 'w'.

Reorder the terms:
-864 + 16w + 3w2 = 864 + -864

Combine like terms: 864 + -864 = 0
-864 + 16w + 3w2 = 0

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

Divide each side by '3'.
-288 + 5.333333333w + w2 = 0

Move the constant term to the right:

Add '288' to each side of the equation.
-288 + 5.333333333w + 288 + w2 = 0 + 288

Reorder the terms:
-288 + 288 + 5.333333333w + w2 = 0 + 288

Combine like terms: -288 + 288 = 0
0 + 5.333333333w + w2 = 0 + 288
5.333333333w + w2 = 0 + 288

Combine like terms: 0 + 288 = 288
5.333333333w + w2 = 288

The w term is 5.333333333w.  Take half its coefficient (2.666666667).
Square it (7.111111113) and add it to both sides.

Add '7.111111113' to each side of the equation.
5.333333333w + 7.111111113 + w2 = 288 + 7.111111113

Reorder the terms:
7.111111113 + 5.333333333w + w2 = 288 + 7.111111113

Combine like terms: 288 + 7.111111113 = 295.111111113
7.111111113 + 5.333333333w + w2 = 295.111111113

Factor a perfect square on the left side:
(w + 2.666666667)(w + 2.666666667) = 295.111111113

Calculate the square root of the right side: 17.178798302

Break this problem into two subproblems by setting 
(w + 2.666666667) equal to 17.178798302 and -17.178798302.

Subproblem 1

w + 2.666666667 = 17.178798302 Simplifying w + 2.666666667 = 17.178798302 Reorder the terms: 2.666666667 + w = 17.178798302 Solving 2.666666667 + w = 17.178798302 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-2.666666667' to each side of the equation. 2.666666667 + -2.666666667 + w = 17.178798302 + -2.666666667 Combine like terms: 2.666666667 + -2.666666667 = 0.000000000 0.000000000 + w = 17.178798302 + -2.666666667 w = 17.178798302 + -2.666666667 Combine like terms: 17.178798302 + -2.666666667 = 14.512131635 w = 14.512131635 Simplifying w = 14.512131635

Subproblem 2

w + 2.666666667 = -17.178798302 Simplifying w + 2.666666667 = -17.178798302 Reorder the terms: 2.666666667 + w = -17.178798302 Solving 2.666666667 + w = -17.178798302 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '-2.666666667' to each side of the equation. 2.666666667 + -2.666666667 + w = -17.178798302 + -2.666666667 Combine like terms: 2.666666667 + -2.666666667 = 0.000000000 0.000000000 + w = -17.178798302 + -2.666666667 w = -17.178798302 + -2.666666667 Combine like terms: -17.178798302 + -2.666666667 = -19.845464969 w = -19.845464969 Simplifying w = -19.845464969

Solution

The solution to the problem is based on the solutions from the subproblems. w = {14.512131635, -19.845464969}

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