1 Tinh  

89/16+25(9/16÷125/64)÷(-27/8)

= \(\frac{89}{16}+25\left(\frac{9}{16}:\frac{125}{64}\right):-\frac{27}{8}\)

=\(\frac{89}{16}+\frac{25.36}{125}:-\frac{27}{8}\)

=\(\frac{89}{16}-\frac{32}{15}=\frac{823}{240}\)

\(\frac{89}{16}+25.\left(\frac{9}{16}:\frac{125}{64}\right):\left(\frac{-27}{8}\right)\)

=\(\frac{89}{16}+25.\frac{36}{125}:\left(\frac{-27}{8}\right)\)

=\(\frac{89}{16}+\frac{36}{5}:\left(\frac{-27}{8}\right)\)

=\(\frac{89}{16}+\left(\frac{-32}{15}\right)\)

=\(\frac{823}{240}\)

\(\frac{89}{16}+25\cdot\left(\frac{9}{16}:\frac{125}{64}\right):\left(-\frac{27}{8}\right)\)

\(=\frac{89}{16}+25\cdot\frac{36}{125}:\left(-\frac{27}{8}\right)\)

\(=\frac{89}{16}+7\frac{1}{5}:\left(-\frac{27}{8}\right)\)

\(=\frac{89}{16}-2\frac{2}{15}\)

\(=3\frac{103}{240}\)

\(4\dfrac{25}{16}+25\left(\dfrac{9}{16}:\dfrac{125}{64}:\dfrac{-27}{8}\right)\)

\(=\dfrac{89}{16}+25\left(\dfrac{36}{125}:\dfrac{-27}{8}\right)\)

\(=\dfrac{89}{16}+25.\dfrac{-32}{375}\)

\(=\dfrac{89}{16}+\dfrac{-32}{15}=\dfrac{823}{240}\)

Chúc bạn học tốt!

\(4\dfrac{25}{16}+25\left(\dfrac{9}{16}:\dfrac{125}{64}:-\dfrac{27}{8}\right)\)

= \(\dfrac{89}{16}+25\left(\dfrac{9}{16}.\dfrac{64}{125}:-\dfrac{27}{8}\right)\)

= \(\dfrac{89}{16}+25\left(\dfrac{36}{125}:-\dfrac{27}{8}\right)\)

= \(\dfrac{89}{16}+25\left(\dfrac{36}{125}.-\dfrac{8}{27}\right)\)

= \(\dfrac{89}{16}+25.-\dfrac{32}{375}\)

\(=\dfrac{89}{16}+-\dfrac{32}{15}\)

= \(\dfrac{823}{240}\)

a, 4¹⁰. 2³⁰=2²⁰.2³⁰=2⁵⁰

b,9²⁵.27⁴.81³= 3⁵⁰.3¹².3¹²=3⁷⁴

Tương tự các câu khác....

a, 4¹⁰.2³⁰ = (2²)¹⁰.2³⁰ = 2²⁰.2³⁰ = 2⁵⁰
b, 9²⁵.27⁴.81³ = (3²)²⁵.(3³)⁴.(3⁴)³ = 3⁵⁰.3¹².3¹² = 3⁷⁴
c, 25⁵⁰.125⁵ = (5²)⁵⁰.(5³)⁵ = 5¹⁰⁰.5¹⁵ = 5¹¹⁵
d, 64³.4⁸.16⁴ = (2⁶)³.(2²)⁸.(2⁴)⁴ = 2¹⁸.2¹⁶.2¹⁶ = 2⁵⁰
e, 3⁸ : 3⁶ = 3²
2¹⁰ : 8³ = 2¹⁰ : (2³)³ = 2¹⁰ : 2⁹ = 2
12⁷ : 6⁷ = (12 : 6)⁷ = 2⁷
@Dương Tuyết Mai

ai giúp mìn vứi ❤

KQ là \(-\frac{61}{16}\)

mk ko bít bạn có cần lời giải ko mk chỉ vít kq hoi 

có j nếu cần lời giải ns mk ha  

\(4\frac{25}{16_{ }}+25.\left(\frac{9}{16}-\frac{117}{64}\right):\frac{27}{8}\)

=\(\frac{25}{4}+25.\left(\frac{36}{64}-\frac{117}{64}\right):\frac{27}{8}\)

=\(\frac{25}{4}+25.\left(\frac{-81}{64}\right):\frac{28}{7}\)

=\(\frac{25}{4}+\left(\frac{-2025}{64}\right).\frac{7}{28}\)

=\(\frac{25}{4}+\left(\frac{-2025}{256}\right)\)

=\(\frac{1600}{256}-\frac{2025}{256}\)

=\(\frac{-425}{256}\)

bn xem có đúng k  nhé!

\(=\frac{89}{16}+25.\frac{369}{500}:\left(\frac{-27}{8}\right)\)

\(=\frac{89}{16}+\frac{369}{20}:\left(\frac{-27}{8}\right)\)

\(=\frac{89}{16}+\frac{-82}{15}\)

\(=\frac{23}{240}\)

bai toán này kho lắm

tớ cũng đanh thắc mắc câu này

a) $125^3:25^4=(5^3)^3:(5^2)^4=5^9:5^8=5^1$

$16^4:4^2=(4^2)^4:4^2=4^8:4^2=4^6$

$27^8:9^4=(3^3)^8:(3^2)^4=3^{24}:3^8=3^{16}$

$125^5:25^3=(5^3)^5:(5^2)^3=5^{15}:5^6=5^9$

$4^{14}:5^{28}=(2^2)^{14}:5^{28}=2^{28}:5^{28}=(\dfrac{2}{5})^{28}$

b) $12^n:2^{2n}=12^n:(2^2)^n=12^n:4^n=3^n$

$64^4.16^5.4^{20}=(4^3)^4.(4^2)^5.4^{20}=4^{12}.4^{10}.4^{20}=4^{42}$

a, 2⁵ x 8⁴ =???