Write down the following in the product form:
(i) x2y4
(ii) 6y5
(iii) 9xy2z
(iv) 10a3b3c3
(i) x2y4=(x×x)×(y×y×y×y)=x×x×y×y×y×y
(ii) 6y5=6×(y×y×y×y×y)=6×y×y×y×y×y
(iii) 9xy2z=9×x×(y×y)×z=9×x×y×y×z
(iv) 10a3b3c3=10×(a×a×a)×(b×b×b)×(c×c×c)=10×a×a×a×b×b×b×c×c×c