(2ab^2)^负二×(a^2b)^2/（3a^3b）^2×（ab^3）^负二不好意思，题目是(2ab^2)^负二×(a^2b)^2/（3a^3b）^2×（ab^3）^负二

Question

【(2a b^2)^负二×(a^2 b)^2】/【（3 a^3 b）^2×（a b^3）^负二】
不好意思，题目是【(2 a b^2)^负二×(a^2 b)^2】/【（3 a^3 b）^2×（a b^3）^负二】

Answer 1

=[(a^2b)^2 / (2ab^2)^2] / [(3a^3b)^2 / (ab^3)^2]
=[(a^4b^2) / (4a^2b^4) ] / [(9a^6b^2) / (a^2b^6)]
=[(a^4b^2) / (4a^2b^4) ] * [(a^2b^6)/(9a^6b^2)]
=[1 /4 ] * [(b^2)/(9a^2)]
=b^2/(36a^2)