1. Simplify the first term using index laws for division.
ab6a−7=a1b6a−7=a−7−1b−6=a−8b−6=a8b61
2. Simplify the second term using the power of a quotient and negative index laws.
(a31)−2=(a−3)−2=a6
3. Add the two simplified terms using a common denominator.
a8b61+a6=a8b61+a8b6a6(a8b6)=a8b61+a14b6
答案a8b6a6b6+1