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VA ROG URGENT!!!
Efectuati:
a. 5*[5+5*(5 la 3-5 la 5: 5 la 3)] +3*5 la 2=
b. (6+ 2 la 10 :2 la 8) la 7 : 10 la 5 -9*10=
VOTEZ CEL MAI BUN
la inseamna putere


Răspuns :


5[5+5(5³-5²)]-3×25=

5[5+5×5²(5-1)-75=          AICI DAM FACTOR COMUN PE 5²

5(5+5×25×4)-75=

5(5+500)-75=

5×505-75=2450


PTR AL DOILEA

(6+2²)^7:10^5-90=

(6+4)^7:10^5-90

10^7:10^5-90

10^2-90=100-90=10

^ACEST SEMN REPREZ PUTEREA