Question

zadanie 7 i 8

Answer 1

Zadanie 8:

a)      9 -4 : 3-4 * 1/3 -4 = 1/94 : 1/34 * 34 = (1/9 * 3/1 )4 * 34= 1/34 * 34 = (1/3 * 3) 4 = 14= 1

b)      12 -3 * (5:15) -3 = 12 -3 * (5/1 * 1/15) -3 = 12 -3 * (1/3) -3 = (12 * 1/3) -3 = 4-3 = 1/4 3 = 1/64

c)      99 -12 * (-11/9) -12 : 121 -12 = 99 -12 * ( -9/11) 12 : 121 -12 = (1/99 * 9/11) 12 : 121 -12 = ( 1/121) 12 : 121 -12 = ( 1/121) 12 : ( 1/121) 12 = ( 1 /121 * 121/1 ) 12 = 1 12 = 1

d)      ( ¾) -5 : ( 1/6) -5 : (4 ½) -5 = ( ¾ : 1/6) -5 : ( 9/2) -5 = ( ¼ : ½) -5 : (9/2) -5 = ( ¼ * 2/1) -5 : 9/2 -5 = ( ½) -5 : 9/2 -5 = ( ½ : 9/2) -5 = ( ½ * 2/9) -5 = ( 1/9) -5 = 9 5 = 59 049

Zadanie 7 :

 

a) ( 6/1 * ½ ) -3 + ( 12:24) -2 = 3 -3 + ( ½) -2 = ( 1/3) 3 + 2 2 = 1/27 + 4 = 4 1/27

b) ( 0,01 : - 0,1 ) -4 – (20 * 0,05) -3 = ( - 1/10) -4 – 1 -3 = - 10 4 – 1 = - 10 001

c) ( 8 * 5/4) -5 – (35: 3,5) -5 = 10 -5 – 10 -5= 0

d) ( 12:6) -2 + ( -2) 12-6 = 2 -2 + ( -2) 6 = ½ 2 + (-64) = ¼ - 64 = 0,25 – 64 = - 63,75

e) ( 0,8 * 5/4) -3 – ( 7/8) -1 = ( 8/10 * 5/4) -3 – 8/7 = 1 -3 – 8/7 = 1 – 8/7 = - 1/7