Use the rules of exponents to simplify the following. (a)(n5)(n-3) (b)(s7)(t7) (e)(w5)-3 (f)(50)(d3)

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问题 Use the rules of exponents to simplify the following.
(a)(n5)(n-3)
(b)(s7)(t7)

(e)(w5)-3
(f)(50)(d3)

选项

答案(a)n2 (b)(sf)7 (c)r8 (d)[*] (e)[*] (f)d3 (g)[*] (h)9x2y3

解析
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