3 years ago

Which expression is equivalentHELP ME PLEASE

Mathematics

1 answer:

aalyn [17]3 years ago

7 0

Answer:

the 4th option is correct

Step-by-step explanation:

$xy^{2/9}$ Original expression

$x(y^{2})^{1/9}$ Split up the exponent

$x(\sqrt[9]{y^{2} } )$ The 1/9 of an expression is the same thing is the 9th root of the expression.

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Step-by-step explanation:

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3 years ago

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3 years ago

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3 years ago

if alpha and beta are zeros of the polynomial x² - 6 X + k find k such that (alpha+beta)²-2alha beta =40

lidiya [134]

Answer:

k = - 2

Step-by-step explanation:

Given α and β are the zeros of x² - 6x + k = 0 , with

a = 1, b = - 6 and c = k , then

α + β = - $\frac{b}{a}$ = - $\frac{-6}{1}$ = 6

αβ = $\frac{c}{a}$ = $\frac{k}{1}$ = k

Then solving

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2 years ago