Answer:

1

Step-by-step explanation:

[tex]a^m^n = a^m * a^n\\a^m^n = a^(m+n)[/tex]

so mn = m+n

to find m(n-1)-(n-1)

= mn-m-n+1

=mn-(m+n)+1, [m+n = mn]

=mn-mn+1

=1

Verified answer

[tex]\huge\fcolorbox{black}{teal}{Answer :-}[/tex]

so mn = m+n

to find m(n-1)-(n-1)

= mn-m-n+1

=mn-(m+n)+1, [m+n = mn]

=mn-mn+1

=1

I hope it helps you!!

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