Answered

What is the simplified form of r^-7+s^-12?


A.) __1___

r^7s^12


B.) -r^7-s^12


C.) r^7/s^12


D.) 1/r^7+1/s^12


Note: ^ means integer.

Verified Answer :

I just took the test the answer is D!!! Hope this helps :)

Answer:

Option D.

Step-by-step explanation:

The given expression is  

\(r^{-7}+s^{-12}\)

We need to find the simplified form of the given expression.

According to the property of exponents,

\(a^{-n}=\dfrac{1}{a^n}\)

Using this property, the given expression can be rewritten as

\(\dfrac{1}{r^{7}}+\dfrac{1}{s^{12}}\)

Hence, the correct option is D.

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