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Question

Show that: (a+1b)m×(a1b)n(b+1a)m×(b1a)n=(ab)m+n

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Solution

(a+1b)m×(a1b)n(b+1a)m×(b1a)n=(ab)m+n
(ab+1b)m×(ab1b)n(ba+1a)m×(ab1a)n=(1b)m+n(1b)m+1
(ab)m+n

1214710_1431447_ans_c2c622681abf40c99bbe7a2aa2074b72.jpg

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