Which expression is equivalent to x 9 y 9 7 , where x and y are positive?

Question

Accepted Answer

Choice B is correct. For positive values of a and b , a m b m = a b m , a n = a 1 n , and a j k = a j k . Therefore, the given expression, x 9 y 9 7 , can be rewritten as x y 9 7 . This expression is equivalent to x y 9 1 7 , which can be rewritten as x y 9 /mo> 1 7 , or x y 9 7 . Choice A is incorrect and may result from conceptual or calculation errors. Choice C is incorrect and may result from conceptual or calculation errors. Choice D is incorrect and may result from conceptual or calculation errors.

Question 34c274