7-4(w-2)w=

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


Simplifying
7 + -4(w + -2) * w = 0

Reorder the terms:
7 + -4(-2 + w) * w = 0

Reorder the terms for easier multiplication:
7 + -4w(-2 + w) = 0
7 + (-2 * -4w + w * -4w) = 0
7 + (8w + -4w2) = 0

Solving
7 + 8w + -4w2 = 0

Solving for variable 'w'.

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-1.75 + -2w + w2 = 0

Move the constant term to the right:

Add '1.75' to each side of the equation.
-1.75 + -2w + 1.75 + w2 = 0 + 1.75

Reorder the terms:
-1.75 + 1.75 + -2w + w2 = 0 + 1.75

Combine like terms: -1.75 + 1.75 = 0.00
0.00 + -2w + w2 = 0 + 1.75
-2w + w2 = 0 + 1.75

Combine like terms: 0 + 1.75 = 1.75
-2w + w2 = 1.75

The w term is -2w.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2w + 1 + w2 = 1.75 + 1

Reorder the terms:
1 + -2w + w2 = 1.75 + 1

Combine like terms: 1.75 + 1 = 2.75
1 + -2w + w2 = 2.75

Factor a perfect square on the left side:
(w + -1)(w + -1) = 2.75

Calculate the square root of the right side: 1.658312395

Break this problem into two subproblems by setting 
(w + -1) equal to 1.658312395 and -1.658312395.

Subproblem 1

w + -1 = 1.658312395 Simplifying w + -1 = 1.658312395 Reorder the terms: -1 + w = 1.658312395 Solving -1 + w = 1.658312395 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + w = 1.658312395 + 1 Combine like terms: -1 + 1 = 0 0 + w = 1.658312395 + 1 w = 1.658312395 + 1 Combine like terms: 1.658312395 + 1 = 2.658312395 w = 2.658312395 Simplifying w = 2.658312395

Subproblem 2

w + -1 = -1.658312395 Simplifying w + -1 = -1.658312395 Reorder the terms: -1 + w = -1.658312395 Solving -1 + w = -1.658312395 Solving for variable 'w'. Move all terms containing w to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + w = -1.658312395 + 1 Combine like terms: -1 + 1 = 0 0 + w = -1.658312395 + 1 w = -1.658312395 + 1 Combine like terms: -1.658312395 + 1 = -0.658312395 w = -0.658312395 Simplifying w = -0.658312395

Solution

The solution to the problem is based on the solutions from the subproblems. w = {2.658312395, -0.658312395}

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