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2.2 Exercises

From Förberedande kurs i matematik 1

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Övning 2.2:1

Förenkla så långt som möjligt

a) 1xx2x1 b) 1y22y2y24
c) (x+1)(x+2)(3x212)(x21) d) (y2+4)(y24)(y2+4y+4)(2y4)