Question

Oblicz :
1. 1 1/5 RAZY 1 2/3 RAZY 1/7 + (1 1/7) DO POTĘGI 2 =
2. (2 1/6 - 2/3 ) do potęgi 2 w nawiasie -2 1/5
3. 10 -2 razy (3 1/5 -2 1/4 razy 1/3 )
4.(7/3 - 5/12 + 1 1/2)do potęgi 2 -2 1/5

NAPISZCIE OBLICZENIA I WYNIK :D
Matematyka z +em - Matematyka 6 Podr. Str. 27/9

Answer 1

1.
1 1/5 * 1 2/3 * 1/7 + (1 1/7)^2 = 6/5 * 5/3 * 1/7 + (8/7)^2 = 2/1 * 1/1 * 1/7 + 64/49 = 2/7+64/49 = 14/49 + 64/49 = 78/49 = 1 29/49
2.
(2 1/6 - 2/3)^2 - 2 1/5 = (13/6 - 4/6)^2 - 11/5 = 81/36 - 11/5 = 405/180 - 396/180 = 9/180 = 1/20
3.
10 - 2*(3 1/5 - 2 1/4 * 1/3) = 10 - 2*(16/5 - 9/12) = 10 - 2*(192/60 - 45/60) = 10-2*(147/60) = 10 - 147/30 = 10 - 4,9 = 5,1
4.
(7/3 - 5/12 + 1 1/2)^2 - 2 1/5 = (84/36 - 15/36 + 54/36)^2 - 11/5 = (123/36)^2 - 11/5 = 15129/1296 - 11/5 = 11 873/1296 - 2 1/5 = 11 4365/6480 - 2 1296/6480 = 9 3069/6480 = 9 1023/2160 = 9 341/720