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OpenStudy (anonymous):
here it is
OpenStudy (anonymous):
x^-40 * x^2
= x^-40+2
=x^38
OpenStudy (hoblos):
first
\[(x^a)^b = x^{a \times b}\]
so \[(x^5)^{-8} = ?\]
OpenStudy (anonymous):
how can you times X @hoblos
OpenStudy (hoblos):
you mean if we have
\[x^a x^b\]
?
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OpenStudy (anonymous):
no (X^5)^-8 how do u times x?
OpenStudy (anonymous):
urggg i hate this
OpenStudy (hoblos):
the general formula says
\[(x^a)^b = x^{ab}\]
so here
\[(x^5)^{-8} = x^{5(-8)} = x^{-40}\]
OpenStudy (hoblos):
now
\[x^{-40} x^2 = ?\]
OpenStudy (anonymous):
umm donno
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OpenStudy (anonymous):
sry im freakin stupid
OpenStudy (hoblos):
\[x^a x^b = x^{a + b}\]
so here
\[x^{-40} x^2 = x^{-40+2} = ?\]
OpenStudy (anonymous):
x^-42
OpenStudy (hoblos):
don't say that you are NOT
just try and you will be able to solve it
OpenStudy (hoblos):
-40+2 = -38
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OpenStudy (anonymous):
ive failed 7 years of mathim in 9th grade
OpenStudy (anonymous):
There's a formula that if a term is raised to the power of something outside brackets, the power outside brackets will be multiplied.
Even if the power inside is 1 it'll get multiplied
Here
\[(x ^{5})^{-8}= x ^{5\times-8}=x ^{-40}\]
rest has been explained by hoblos
OpenStudy (hoblos):
that's mot a shame , Bill Gates failed to
so must not stop trying
OpenStudy (the_fizicx99):
He did :O
OpenStudy (the_fizicx99):
\[x ^{-b} = \frac{ 1 }{ x^b }\]
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OpenStudy (anonymous):
?
OpenStudy (anonymous):
whats that
OpenStudy (the_fizicx99):
Another rule, it's how you make the negative exponent positive
OpenStudy (anonymous):
oh gosh dats the last thing i want can ya give me the answer plz i would like to move on
OpenStudy (hoblos):
you will use that after a bit @luvalpaca
now
\[x^{-40+2} = ?\]
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OpenStudy (anonymous):
grrrr
OpenStudy (anonymous):
just give me the answer plz
OpenStudy (hoblos):
just try once more
-40+2 =-38
so
\[x^{-40+2} = ?\]
OpenStudy (anonymous):
ppl these days
OpenStudy (anonymous):
ive study my ____ off on khan academy and i still dont get what the heck to do just give me the answer im gettin mad plz
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OpenStudy (the_fizicx99):
Answer what hoblos asked you and you'll get your answer.
OpenStudy (anonymous):
I DONT KNOW WHAT THE flutter IT ISSSSSSSSSSSSSSSSSSSSSS
OpenStudy (anonymous):
Exactly.. I've made a mistake in my first answer. See if you can correct that luvalpaca
OpenStudy (the_fizicx99):
-40 + 2 = ?
OpenStudy (hoblos):
calm down @luvalpaca
it just need one second for you to get it, just try it once more and tell me what you get
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