Question

已知a=5,b等于负五分之一,n为自然数,你能求a的2n加2次方乘以b的2n次方乘以b的4次方的值吗?

Answer 1

5^(2n+2)*(1/5)^(2n)*(1/5)^4

=5^2*(5^2n)/[5^(2n)*5^4]

=5^2/5^4

=1/5^2

=1/25