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b)0,2do potęgi drugej= 0,04
c)(jedna druga)do potęgi3= 1/8
d)(1i jedna druga)do potęgi2= 9/4
2.Oblicz:
a)2i jedna piąta+pienc szustych razy trzy piąte= 11/5 + 5/6 * 3/5 = 11/5 + 1/2 = 27/10 = 2 i 7/10
b)7-cztery piąte:1jedna druga= 7 - 4/5 * 2 = 7- 8/5 = 7- 1 i 3/5 = 6 i2/5