SOLUTION: ok my question is..im in pre algebra at klein high school. and my quest is..how can i figure out a easer way to solve problems such as.. xand the exponet is a negitive 8 1/x (n

Algebra ->  Square-cubic-other-roots -> SOLUTION: ok my question is..im in pre algebra at klein high school. and my quest is..how can i figure out a easer way to solve problems such as.. xand the exponet is a negitive 8 1/x (n      Log On


   



Question 28867: ok my question is..im in pre algebra at klein high school. and my quest is..how can i figure out a easer way to solve problems such as..
xand the exponet is a negitive 8
1/x (negivtive seven) thest problems are so difficult for me to understand so can you please help me ASAP!
thanks a ton

Found 2 solutions by Earlsdon, josmiceli:
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
Negative exponents:
x%5E%28-8%29 To make the exponent positive, you would move the monomial into the denominator.
x%5E%28-8%29+=+1%2Fx%5E8
If it is already in the denominator, you would move it up into the numerator.
1%2Fx%5E%28-7%29+=+x%5E7

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
what is an exponent?
start with that
If you really get that down good, you'll do better
It just means- how many times do I multiply something by itself
2%2A2%2A2%2A2%2A2%2A2+=+2%5E6
x%2Ax%2Ax%2Ax%2Ax+=+x%5E5
Then ask- how do I write 1+%2F+%282%2A2%2A2%2A2%2A2%2A2%29
you could calculate it with a calculator or in your head, but you
just want to write it with an exponent
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this is a fact-just accept it
1+%2F+%282%2A2%2A2%2A2%2A2%2A2%29+=+2%5E%28-6%29
then it's easy to multiply numbers with exponents
look at this
%281+%2F+%282%2A2%2A2%2A2%2A2%2A2%29%29+%2A+%282%2A2%2A2%2A2%2A2%2A2%29+=+1
thats easy to see
%281+%2F+anything%29+%2A+anything+=+1
but looking back at what I just said, 2%5E6+%2A+2%5E%28-6%29 must = 1
that's true
just add the exponents 2%5E6+%2A+2%5E%28-6%29+=+2%5E%286-6%29+=+2%5E0+=+1
that's another rule- anything like 2%5E0 or x%5E0 or
anything with a zero exponent = 1
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Always, always try to improve your understanding first
Never, never try to memorize first- that can come later
Third- it's really just a game- find a way to make it fun
good luck- doing your best is the real success