1. Express the following as a single fraction: 1 1 (a) + xy x² Hint: Treat each variable as a prime factor. Leave your answer in fraction form. x+y x²y 1 (b) = /2 + 1/1/12 z²+1 z³ (c) (d) 1 2x+1 3x-1 (2x+1)(x-2) N or Simplify and express as a product of xª xzb 1 x³z4 1 X لام + 씨의 S 19 1 X-2

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