7w^2-7w-140=

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Solution for 7w^2-7w-140= equation:


Simplifying
7w2 + -7w + -140 = 0

Reorder the terms:
-140 + -7w + 7w2 = 0

Solving
-140 + -7w + 7w2 = 0

Solving for variable 'w'.

Factor out the Greatest Common Factor (GCF), '7'.
7(-20 + -1w + w2) = 0

Factor a trinomial.
7((-4 + -1w)(5 + -1w)) = 0

Ignore the factor 7.

Subproblem 1

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

Subproblem 2

Set the factor '(5 + -1w)' equal to zero and attempt to solve: Simplifying 5 + -1w = 0 Solving 5 + -1w = 0 Move all terms containing w to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -1w = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -1w = 0 + -5 -1w = 0 + -5 Combine like terms: 0 + -5 = -5 -1w = -5 Divide each side by '-1'. w = 5 Simplifying w = 5

Solution

w = {-4, 5}

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