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(x/y)5a3=(y/x)173a(x/y)^{5a-3}=(y/x)^{17-3a}find a

A8

B-8

C-7

D7

Answer:

C. -7

Read Explanation:

(x/y)5a3=(y/x)173a(x/y)^{5a-3}=(y/x)^{17-3a}

(x/y)5a3=(x/y)3a17(x/y)^{5a-3}=(x/y)^{3a-17}

5a3=3a175a-3=3a-17

5a3a=17+35a-3a=-17+3

2a=142a=-14

a=14/2=7a=-14/2 = -7


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