Question

【高一数学化简】问a^(1-x2)-a^(1-x1)怎么转成[a(a^x1-a^x2)/(a^x1a^x2)]?

Answer 1

=a^1÷a^x2-a^1÷a^x1

=a(1/a^x2-1/a^x1)

通分

=a(a^x1-a^x2)/(a^x1a^x2)