-4(w-3)(-8+2w)=-7w

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Solution for -4(w-3)(-8+2w)=-7w equation:


Simplifying
-4(w + -3)(-8 + 2w) = -7w

Reorder the terms:
-4(-3 + w)(-8 + 2w) = -7w

Multiply (-3 + w) * (-8 + 2w)
-4(-3(-8 + 2w) + w(-8 + 2w)) = -7w
-4((-8 * -3 + 2w * -3) + w(-8 + 2w)) = -7w
-4((24 + -6w) + w(-8 + 2w)) = -7w
-4(24 + -6w + (-8 * w + 2w * w)) = -7w
-4(24 + -6w + (-8w + 2w2)) = -7w

Combine like terms: -6w + -8w = -14w
-4(24 + -14w + 2w2) = -7w
(24 * -4 + -14w * -4 + 2w2 * -4) = -7w
(-96 + 56w + -8w2) = -7w

Solving
-96 + 56w + -8w2 = -7w

Solving for variable 'w'.

Reorder the terms:
-96 + 56w + 7w + -8w2 = -7w + 7w

Combine like terms: 56w + 7w = 63w
-96 + 63w + -8w2 = -7w + 7w

Combine like terms: -7w + 7w = 0
-96 + 63w + -8w2 = 0

Begin completing the square.  Divide all terms by
-8 the coefficient of the squared term: 

Divide each side by '-8'.
12 + -7.875w + w2 = 0

Move the constant term to the right:

Add '-12' to each side of the equation.
12 + -7.875w + -12 + w2 = 0 + -12

Reorder the terms:
12 + -12 + -7.875w + w2 = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -7.875w + w2 = 0 + -12
-7.875w + w2 = 0 + -12

Combine like terms: 0 + -12 = -12
-7.875w + w2 = -12

The w term is -7.875w.  Take half its coefficient (-3.9375).
Square it (15.50390625) and add it to both sides.

Add '15.50390625' to each side of the equation.
-7.875w + 15.50390625 + w2 = -12 + 15.50390625

Reorder the terms:
15.50390625 + -7.875w + w2 = -12 + 15.50390625

Combine like terms: -12 + 15.50390625 = 3.50390625
15.50390625 + -7.875w + w2 = 3.50390625

Factor a perfect square on the left side:
(w + -3.9375)(w + -3.9375) = 3.50390625

Calculate the square root of the right side: 1.871872391

Break this problem into two subproblems by setting 
(w + -3.9375) equal to 1.871872391 and -1.871872391.

Subproblem 1

w + -3.9375 = 1.871872391 Simplifying w + -3.9375 = 1.871872391 Reorder the terms: -3.9375 + w = 1.871872391 Solving -3.9375 + w = 1.871872391 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '3.9375' to each side of the equation. -3.9375 + 3.9375 + w = 1.871872391 + 3.9375 Combine like terms: -3.9375 + 3.9375 = 0.0000 0.0000 + w = 1.871872391 + 3.9375 w = 1.871872391 + 3.9375 Combine like terms: 1.871872391 + 3.9375 = 5.809372391 w = 5.809372391 Simplifying w = 5.809372391

Subproblem 2

w + -3.9375 = -1.871872391 Simplifying w + -3.9375 = -1.871872391 Reorder the terms: -3.9375 + w = -1.871872391 Solving -3.9375 + w = -1.871872391 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '3.9375' to each side of the equation. -3.9375 + 3.9375 + w = -1.871872391 + 3.9375 Combine like terms: -3.9375 + 3.9375 = 0.0000 0.0000 + w = -1.871872391 + 3.9375 w = -1.871872391 + 3.9375 Combine like terms: -1.871872391 + 3.9375 = 2.065627609 w = 2.065627609 Simplifying w = 2.065627609

Solution

The solution to the problem is based on the solutions from the subproblems. w = {5.809372391, 2.065627609}

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