How do you simplify #((2a)/(9c))^-2# and write it using only positive exponents?
See a solution process below:
First, use these rules of exponents to eliminate the outer exponent:
Now, use these rules of exponents to eliminate the negative exponents:
One of the laws of indices states that:
So, by inverting the fraction, the index changes sign.
All the indices are now positive and it only remains to square each factor.