Oblicz wartości wyrażeń. a) (√2 1/4 - √9/16)* 1 1/3 : 3 1/3 b) 4 1/2 : ( √4/9 - √1/16) : 1 4/5 c) √1 7/9 : (2 1/4 - 1 5/6) : √7 1/9 d) (√9 - √0,09): √0,01 e) (√16/5 - 2,8) * √o,81 f) (√36/4 - 1,8) * 2/√25 Bardzo prosze o szybka odpowiedz..;D daje NAJ!!! ;)
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a)
(√2 ¼ -√9/16)·1⅓:3⅓=(√9/4 - √9/16) · 4/3·3/10= (3/2-¾)·⅖=(6/4-¾)·⅖=¾·⅖=3/10
b)
4 1/4: (√4/9-√1/16):1 4/5=9/2:(⅔-¼):9/5=9/2:(8/12-3/12):9/5=9/2:5/12:9/5=9/2·12/5·5/9=6/1=6
c)
√1 7/9:(2¼-1⅚):√7 1/9=√16/9: (9/4-11/6):√64/9=⁴/₃:(27/12-22/12): 8/3=4/3:5/12:8/3=
=4/3·12/5·3/8=6/5=1 ⅕
d)
(√9-√0,09):√0,01=(3-0,3):0,1=2,7:0,1=27
e)
(√16/5-2,8)·√0,81=(4/5-28/10)·0,9=(8/10-28/10)·0,9=20/10·0,9=2·0,9=1,8
f)
(√36/4·⅛)·2/√25=(6/2·⅛)·⅖=3/8·⅖=3/20