(w+7)(w-4)=

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


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

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

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

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

Combine like terms: 7w + -4w = 3w
(-28 + 3w + w2) = 0

Solving
-28 + 3w + w2 = 0

Solving for variable 'w'.

Factor a trinomial.
(-7 + -1w)(4 + -1w) = 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 '(4 + -1w)' equal to zero and attempt to solve: Simplifying 4 + -1w = 0 Solving 4 + -1w = 0 Move all terms containing w to the left, all other terms to the right. Add '-4' to each side of the equation. 4 + -4 + -1w = 0 + -4 Combine like terms: 4 + -4 = 0 0 + -1w = 0 + -4 -1w = 0 + -4 Combine like terms: 0 + -4 = -4 -1w = -4 Divide each side by '-1'. w = 4 Simplifying w = 4

Solution

w = {-7, 4}

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