Question

Va rog mai repede!!!​

Answer 1

Răspuns:

Bună,

3. Efectuați:

$a)3 ^{21} \div {3}^{19} \\ = 3 ^{21 - 19} \\ = {3}^{2} \\ = \orange{9 }$

$b) ({3}^{8} )^{7} - 9 ^{28} \\ = {3}^{8 \times 7} - ( {3}^{2} ) ^{28} \\ = 3^{56} - {3}^{56} \\ = \green{0}$

$c)(3 ^{27} - 2 \times {3}^{26} ) \div 3 ^{24} \\ = {3}^{26} (3 - 2) \div 3 ^{24} \\ = 1 \times {3}^{26 - 24} \\ = {3}^{2} \\ = \blue{9}$

Sper că te-am ajutat