tính hợp lí a) 8^16:4^12 b)90^2:15^2 c)(45^10.5^10):75^10 Question tính hợp lí a) 8^16:4^12 b)90^2:15^2 c)(45^10.5^10):75^10 in progress 0 Môn Toán Kiệt Gia 4 years 2020-11-09T03:16:10+00:00 2020-11-09T03:16:10+00:00 1 Answers 146 views 0
Answers ( )
Đáp án:
Giải thích các bước giải:
a)$8^{16} :4^{12}$
=$2^{16} .4^{16}:4^{12}$
=$2^{16}.4^{4}$
=$2^{16}.2^{8}$
b) $90^2 :15^2$
$=(90:15)^2$
$=6^2$
$=36$
c)$(45^{10}.5^{10}):75^{10}$
$=(45.5)^{10}:75^{10}$
$=225^{10}:75^{10}$
$=3^{10}$