SOLUTION: How would I do these problems? (1/a)^-1 = a a^-1/a^0 = 1/a And is this problem true? (4 + 5)^-1 = 4^-1 + 5^-1 Please show all work. Thank you!!!

Question 134402: How would I do these problems?
(1/a)^-1 = a
a^-1/a^0 = 1/a
And is this problem true?
(4 + 5)^-1 = 4^-1 + 5^-1
Please show all work. Thank you!!!
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
How would I do these problems? Just follow the rules of exponents
:

Inverting the fraction gets rid of the neg exponent, so you just have

A number with an exponent of 1 is the same as just the number

which is:
a = a; true
:
:

Remember any number with ^0 exponent is equal to 1, so you have

Write the number's reciprocal to get rid of negative
; true
:
And is this problem true?

Do the math inside the brackets

write the reciprocal of the each term to get rid of the negative
; obviously this is not true
:
Did this help? Any questions?
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