2w^2-7w-400=0

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Solution for 2w^2-7w-400=0 equation:


Simplifying
2w2 + -7w + -400 = 0

Reorder the terms:
-400 + -7w + 2w2 = 0

Solving
-400 + -7w + 2w2 = 0

Solving for variable 'w'.

Factor a trinomial.
(-25 + -2w)(16 + -1w) = 0

Subproblem 1

Set the factor '(-25 + -2w)' equal to zero and attempt to solve: Simplifying -25 + -2w = 0 Solving -25 + -2w = 0 Move all terms containing w to the left, all other terms to the right. Add '25' to each side of the equation. -25 + 25 + -2w = 0 + 25 Combine like terms: -25 + 25 = 0 0 + -2w = 0 + 25 -2w = 0 + 25 Combine like terms: 0 + 25 = 25 -2w = 25 Divide each side by '-2'. w = -12.5 Simplifying w = -12.5

Subproblem 2

Set the factor '(16 + -1w)' equal to zero and attempt to solve: Simplifying 16 + -1w = 0 Solving 16 + -1w = 0 Move all terms containing w to the left, all other terms to the right. Add '-16' to each side of the equation. 16 + -16 + -1w = 0 + -16 Combine like terms: 16 + -16 = 0 0 + -1w = 0 + -16 -1w = 0 + -16 Combine like terms: 0 + -16 = -16 -1w = -16 Divide each side by '-1'. w = 16 Simplifying w = 16

Solution

w = {-12.5, 16}

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