Question: Simplifying expression with sqrt of complex expressions

l*`ℏ`*t*sqrt(4*`ℏ`^2*a^2*t^2 + m^2)/(sqrt(2*I*`ℏ`*t*a + m)*sqrt(-2*I*`ℏ`*t*a + m)*m) can be simplified :l *h*t/m

How can I ask Maple to do this.

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