3 years ago

Which of the following best describes a rational exponent

Mathematics

1 answer:

bija089 [108]3 years ago

3 0

The answer I think is B

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PIT_PIT [208]

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The value of k is 4 and q is 16.

Step-by-step explanation:

First, you have to expand the brackets by applying :

${(a + b)}^{2} = {a}^{2} + 2ab + {b}^{2}$

${x}^{2} + 8x + q = {(x + k)}^{2}$

${x}^{2} + 8x + q = {x}^{2} + 2kx + {k}^{2}$

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$by \: comparison$

$8x = 2kx$

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$q = {k}^{2}$

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