The quadratic equation -2w^2-6+80 will be zero when w equals

David Dal Busco asked Feb 11, 2023

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David Dal Busco asked Feb 11, 2023

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22 votes

Answer:

Answer: x will be equal to 5 and -8

Explanation:

${ \tt{ - 2 {w}^(2) - 6w + 80 = 0 }}$

» Divide all equation through out by -2:

${ \tt{ {w}^(2) + 3w - 40 = 0}}$

» Factorise the equation quadratically:

${ \tt{(x - 5)(x + 8) = 0}} \\ { \tt{x = 5 \: \: and \: \: - 8}}$

Chydik answered Feb 17, 2023

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