oblicz:
a) (2·5/6)² - (3²-√1i 7/9) =
b) [(-2/3)² : 8/9] do potęgi -1 =
c) 1,6·7/16 - 2,7/3³ =
daje naj ;]
(5/3)²-(3²-√16/9)=25/9-(9-4/3)=25/9-23/3=25/9-69/9=-44/9
b) [(-2/3)² : 8/9] do potęgi -1 =(4/9·9/8)⁻¹=(½)⁻¹=2
c) 1,6·7/16 - 2,7/3³ =16/10·7/16-2,7/27=7/10-1/10=6/10=3/5
a)
b)
c)
(2×⅚)²-(3²-√1⁷/₉)=
¹⁰⁰/₃₆-(9-√¹⁶/₉)=²⁵/₉-⁸¹/₉+¹²/₉=-4⁸/₉
[(-⅔)²:⁸/₉]⁻¹=(⁴/₉×⁹/₈)⁻¹=2
1,6×7/16-2,7/3³=
⁸/₅×7/16-2,7/27=
0,7-0,1=0,6
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a) (2·5/6)² - (3²-√1i 7/9) =
(5/3)²-(3²-√16/9)=25/9-(9-4/3)=25/9-23/3=25/9-69/9=-44/9
b) [(-2/3)² : 8/9] do potęgi -1 =(4/9·9/8)⁻¹=(½)⁻¹=2
c) 1,6·7/16 - 2,7/3³ =16/10·7/16-2,7/27=7/10-1/10=6/10=3/5
a)
b)
c)
a)
(2×⅚)²-(3²-√1⁷/₉)=
¹⁰⁰/₃₆-(9-√¹⁶/₉)=²⁵/₉-⁸¹/₉+¹²/₉=-4⁸/₉
b)
[(-⅔)²:⁸/₉]⁻¹=(⁴/₉×⁹/₈)⁻¹=2
c)
1,6×7/16-2,7/3³=
⁸/₅×7/16-2,7/27=
0,7-0,1=0,6