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valentinak56 [21]

3 years ago

14

At Memorial Hospital, 9 of the 12 babies born on Tuesday were boys. In simplest form, what fraction of the babies born on Tuesda

y were boys?

2 answers:

Elza [17]3 years ago

7 0

The answer is 3/4....

QveST [7]3 years ago

6 0

Divide both 9 and 12 by 3. The answer will be 3/4 in simplest form

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What is the completely factored form of x4 8x2 – 9?

Alinara [238K]

For this case we have the following polynomial:

$x ^ 4 + 8x ^ 2 - 9$

We make the following change of variables:

$u = x ^ 2$

Rewriting we have

$u ^ 2 + 8u - 9$

Factoring the second order polynomial we have:

$(u + 9) (u-1)$

Then, returning the change we have:

$(x ^ 2 + 9) (x ^ 2-1)$

Finally, we factor the expression in the parentheses of the second term:

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Answer:

the completely factored form is:

$(x ^ 2 + 9) (x + 1) (x-1)$

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3 years ago

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