Question

4的m次方+4的n次方-2的m+n+1次方因式分解

Answer 1

你好

4^m(4的m次方)=(2^2)^m=2^2m

同理,4^n=2^2n

所以,原式=2^2m+2^2n-2^(m+n+1)

=2^(2m+2m-m-m-1)

=2^(m+n-1)