Mathematics
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OpenStudy (anonymous):
(-2x^3)^-2
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OpenStudy (anonymous):
ok since the exponent is outside the parenthesis you would distribute it inside the parenthesis, any idea how to do that?
OpenStudy (anonymous):
no not really
OpenStudy (anonymous):
You would multiply the exponents so -2x^-6 do you know what you would do to the whole #?
OpenStudy (anonymous):
\((-2x^3)^{-2}\)
This can be expanded out to make it easier to understand.
\((-2\times x\times x \times x)^{-2}\)
OpenStudy (anonymous):
\(x^2 = x \times x\)
\((x^2)^2 = x^2 \times x^2 = x \times x \times x \times x\)
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OpenStudy (anonymous):
@jamie_ballenger does this make sense?
OpenStudy (anonymous):
I would make the-2 positive right
OpenStudy (anonymous):
2 negatives make a positive
OpenStudy (anonymous):
Yes, 2 negatives make a positive.
OpenStudy (anonymous):
Think about what you are multiplying.
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OpenStudy (anonymous):
2x^-6?
OpenStudy (anonymous):
Not quite.
OpenStudy (anonymous):
The entire term is being raised to the -2 power, not just the x.
OpenStudy (anonymous):
4x^-6
OpenStudy (anonymous):
Closer, but remember the negative exponent, the negative can't just disappear.
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OpenStudy (anonymous):
im lost
OpenStudy (anonymous):
\(x^{-1} = \dfrac{1}{x}\)
OpenStudy (anonymous):
Distribute the exponent:
\((-2)^{-2} \times x^{-6} =\)
OpenStudy (anonymous):
\(-2 \times -2 = 4\) but that 4 still needs a -1 exponent.
OpenStudy (anonymous):
A negative exponent inverts the fraction.
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OpenStudy (anonymous):
A little more clear yet?
OpenStudy (anonymous):
yes