Question

已知n是正整数,x的2n次方=16,求｛16分之1x的3n次方｝2次方-16分之1｛x的2次方｝的2n

Answer 1

(x^(3n)/16)^2-(x^2)^2n/16

=(x^(2n))^3/16^2-(x^(2n))^2/16

=16^3/16^2-16^2/16

=16-16

=0