(4w-1)(7+w)=0

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Solution for (4w-1)(7+w)=0 equation:


Simplifying
(4w + -1)(7 + w) = 0

Reorder the terms:
(-1 + 4w)(7 + w) = 0

Multiply (-1 + 4w) * (7 + w)
(-1(7 + w) + 4w * (7 + w)) = 0
((7 * -1 + w * -1) + 4w * (7 + w)) = 0
((-7 + -1w) + 4w * (7 + w)) = 0
(-7 + -1w + (7 * 4w + w * 4w)) = 0
(-7 + -1w + (28w + 4w2)) = 0

Combine like terms: -1w + 28w = 27w
(-7 + 27w + 4w2) = 0

Solving
-7 + 27w + 4w2 = 0

Solving for variable 'w'.

Factor a trinomial.
(-7 + -1w)(1 + -4w) = 0

Subproblem 1

Set the factor '(-7 + -1w)' equal to zero and attempt to solve: Simplifying -7 + -1w = 0 Solving -7 + -1w = 0 Move all terms containing w to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + -1w = 0 + 7 Combine like terms: -7 + 7 = 0 0 + -1w = 0 + 7 -1w = 0 + 7 Combine like terms: 0 + 7 = 7 -1w = 7 Divide each side by '-1'. w = -7 Simplifying w = -7

Subproblem 2

Set the factor '(1 + -4w)' equal to zero and attempt to solve: Simplifying 1 + -4w = 0 Solving 1 + -4w = 0 Move all terms containing w to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + -4w = 0 + -1 Combine like terms: 1 + -1 = 0 0 + -4w = 0 + -1 -4w = 0 + -1 Combine like terms: 0 + -1 = -1 -4w = -1 Divide each side by '-4'. w = 0.25 Simplifying w = 0.25

Solution

w = {-7, 0.25}

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