9w^2+9w-3w^2=81

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Solution for 9w^2+9w-3w^2=81 equation:


Simplifying
9w2 + 9w + -3w2 = 81

Reorder the terms:
9w + 9w2 + -3w2 = 81

Combine like terms: 9w2 + -3w2 = 6w2
9w + 6w2 = 81

Solving
9w + 6w2 = 81

Solving for variable 'w'.

Reorder the terms:
-81 + 9w + 6w2 = 81 + -81

Combine like terms: 81 + -81 = 0
-81 + 9w + 6w2 = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(-27 + 3w + 2w2) = 0

Factor a trinomial.
3((-9 + -2w)(3 + -1w)) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(-9 + -2w)' equal to zero and attempt to solve: Simplifying -9 + -2w = 0 Solving -9 + -2w = 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 + -2w = 0 + 9 Combine like terms: -9 + 9 = 0 0 + -2w = 0 + 9 -2w = 0 + 9 Combine like terms: 0 + 9 = 9 -2w = 9 Divide each side by '-2'. w = -4.5 Simplifying w = -4.5

Subproblem 2

Set the factor '(3 + -1w)' equal to zero and attempt to solve: Simplifying 3 + -1w = 0 Solving 3 + -1w = 0 Move all terms containing w to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + -1w = 0 + -3 Combine like terms: 3 + -3 = 0 0 + -1w = 0 + -3 -1w = 0 + -3 Combine like terms: 0 + -3 = -3 -1w = -3 Divide each side by '-1'. w = 3 Simplifying w = 3

Solution

w = {-4.5, 3}

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