Question

Va rooog!!!!! E urgeent​

Answer 1

Bună!

$a^{m}: a^{n}= a^{m-n}$

a) $8^{15} :8^{12} =8^{15-12} =8^{3}=512$

b)$13^{31} :13^{30}+13=13^{31-30} +13=13+13=26$

c) $7^{29} :7^{26} -7^{2} =7^{29-26} -7^{2} =7^{3} -7^{2}=7^{2} (7-1)= 49*6=294$

d) $7^{17} :7^{13} -7^{3} +13^{0} =7^{17-13} -7^{3} +1=7^{3} (7-1)+1=343*6+1=2059$

e)$(11+4)^{22} :15^{20} -15^{0}=15^{22-20} -1=225-1=224$

f)$(42:14)^{2} *9^{18} :27^{6} =(42:14)^{2} *3^{36} :3^{18} =3^{2} *3^{38-18} =3^{2+18} =3^{20}$