Answers

1. Answer:

   y^7

   Step-by-step explanation:

   y^3 . y^5 . y^-2 . y

   = y^3 . y^5 . y^-2 . y^1

   = y^( 3 + 5 – 2 + 1 )

   = y^( 3 + 5 + 1 – 2 )

   = y^( 9 – 2 )

   = y^7

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