Question

2m[2(2m-1)+1]= y^n-1(2y^n-3y^n+1-4y)=

Answer 1

2m[2(2m-1)+1]

=2m(4m-2+1)

=2m(4m-1)

=8m²-2m

y^n-1(2y^n-3y^n+1-4y)

=y^n-2y^n+3y^n-1+4y

=2y^n-1+4y

第二题几次方不清楚,再做了一个

y^(n-1)次方[2y^(n-3)次方y^(n+1)次方-4y]

=2y^(n-1+n-3+n+1)-4y^(n-1+1)

=2y^(3n-3)-4y^n

a^2m=(a^m)²=6²=36