What is 3A times 3A?

9a²

What is a ^ 2B ^ 3 times (AB ^ 2) ^ - 2

A ^ 2B ^ 3 times (AB ^ 2) ^ - 2
=A ^ 2B ^ 3 times (a ^ - 2b ^ - 4)
=B^-1
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Solution
(2ab²)×(-3a²b)²
=(2ab²)×(9a^4b²)
=18a^5b^4