Question

(2p) 3 Efectuați:
c. 15 la puterea 38:5 la puterea 38 - (3¹⁹) ²;
b. (2.5)³ +4545 :945:544-2000⁰;
d. 30+³:10n+3 -3.3³.
Dau coroana si vreau rezolvarea completa

Answer 1

15³⁸:5³⁸ - (3¹⁹)²=3³⁸×5³⁸:5³⁸ -3³⁸=

3³⁸-3³⁸=0

b. (2×5)³+45⁴⁵:9⁴⁵:5⁴⁴-2000⁰=

2³×5³+5⁴⁵×9⁴⁵:9⁴⁵:5⁴⁴-1=

2³×5³+5×1-1=2³×5³+4=2²(2×5³+1)

d. 30^(n+3):10^(n+3) -3^n×3³=

3^(n+3)×10^(n+3):10^(n+3)-3^(n+3)=

3^(n+3)-3^(n+3)=0