Simplify the following:
Fractions are just basically numbers. Therefore the exponent laws are still applicable.
Let's use the first exponent law to simplify this term.
This term now becomes:
Alright, '+' sign multiply by '-' sign gives a '-' sign.
Hence, we have:
Now, since both of the denominators are the same, we can combine these two fractions into one.
Hence, this term becomes:
Now, 2 divides by 2 gives 1. Rather than leaving the answer as a1. It's neater to write a1 as a.
Clearly, the answer is C.
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