w^2+7w=18

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Solution for w^2+7w=18 equation:


Simplifying
w2 + 7w = 18

Reorder the terms:
7w + w2 = 18

Solving
7w + w2 = 18

Solving for variable 'w'.

Reorder the terms:
-18 + 7w + w2 = 18 + -18

Combine like terms: 18 + -18 = 0
-18 + 7w + w2 = 0

Factor a trinomial.
(-9 + -1w)(2 + -1w) = 0

Subproblem 1

Set the factor '(-9 + -1w)' equal to zero and attempt to solve: Simplifying -9 + -1w = 0 Solving -9 + -1w = 0 Move all terms containing w to the left, all other terms to the right. Add '9' to each side of the equation. -9 + 9 + -1w = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -1w = 0 + 9 -1w = 0 + 9 Combine like terms: 0 + 9 = 9 -1w = 9 Divide each side by '-1'. w = -9 Simplifying w = -9

Subproblem 2

Set the factor '(2 + -1w)' equal to zero and attempt to solve: Simplifying 2 + -1w = 0 Solving 2 + -1w = 0 Move all terms containing w to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + -1w = 0 + -2 Combine like terms: 2 + -2 = 0 0 + -1w = 0 + -2 -1w = 0 + -2 Combine like terms: 0 + -2 = -2 -1w = -2 Divide each side by '-1'. w = 2 Simplifying w = 2

Solution

w = {-9, 2}

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