1.

-x^(5/7) %2B x^(12/7)

Answer»

x^12/7-x5/7x^12/7-x^5/7x^12/7/x-5/7x^12/7-5/7x^7/7x

x is the correct answer

x is correct answer in this questions

x^12/7 -x^5/7=x12/7-5/7=x^7/7=1



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