Question

exercitiile 8 si 9 va rog

Answer 1

8. |x|=2 rezulta ca x=2 sau x = -2
 |x-2|=0 rezulta ca x-2=0 rezulta x= 2
9. (-2) la puterea ( 1+71+35) : (-2) la puterea (21*5)
(-2)la puterea 107 : (-2) la puterea 105= 2 la puterea(107-105)=2²=4

Answer 2

$8a).|x|=2 \\ x=-2;x=2 \\ b).|x-2|=0 \\ x-2=0 \\ x=0+2 \\ x=2 \\ 9).[-2*(-2)^7^1*(-2)^3^5]:[(-2)^2^1]^5=[(-2)^1^+^7^1^+^3^5]:(-2)^1^0^5= \\ =(-2)^1^0^7:(-2)^1^0^5=2^1^0^7^-^1^0^5=2^2=4$