-(): .: ()(1): ,.(2): ,-,.(3): ,.( ):. :.-.() :, ,.,. ,.(): .,., :1. ,: ,4,. 2. ,:,.4:(1) ,.5,;(2),.(+2)(+3)=(+6) (-2)(+3)=(-6) (+2) (-3)=(-6) (-2)( -3)=(+6) ,;() (3),.01-6,?,.,(4),.1,. 3. ,:, 301,2,: 1,. 2. 3.4. ,:4,.2,5. ,:,.6:1.,.6. ,.,.1,2,3,4,. -2 anan - 1 - 2 3 4 5 1 4 2 9 93 415- 6000- 1.7. ?8. -1-23 56=65 -566-51 5-6= (-65=3-2= -2 3= ab=ba2 3-4-5= 3 -4-5=
