Вычислите 1)4^15*4^6/4^19 2)(-5)^7*(-5)^6/(-5)^12

Question

Вычислите 1)4^15*4^6/4^19 2)(-5)^7*(-5)^6/(-5)^12

Answer 1

1)4ˇ15 . 4ˇ6 /4ˇ19=4ˇ21/4ˇ19=4ˇ2=16
2)(-5)ˇ7 .(-5)ˇ6/(-5)ˇ12=(-5)ˇ13/(-5)ˇ12=(-5)ˇ1=-5