1,

\(75-\left(3.5^2-4.2^3\right)=75-\left(75-32\right)=75-75+32=32\)

2,

\(58.76+24.58-5.20=58\left(76+58\right)-100=58.100-100=100\left(58-1\right)=5700\)3,

\(4.5^2-3.2^3+3^3:3^2=4.5^2-3.2^3+3^{3-2}=3\left(2^3+1\right)+100=27+100=127\)4,

\(\left[5^2.6-20\left(37-2^5\right)\right]:10-10^0=\left(5^2.6-20.5\right):10-1=\left[10\left(15-10\right)\right]:10-1=5-1=4\)cái đề bn ghi ko rõ nên mk lầm thì báo mk nhé

a: \(35\cdot20+125:5^2\)

\(=700+\frac{125}{25}\)

=700+5=705

b: \(5^2\cdot8-60:2^2\)

\(=25\cdot8-60:4\)

=200-15

=185

c: \(4500:15+3^4\cdot10\)

=300+81*10

=300+810

=1110

d: \(175-\left\lbrack3\cdot5^2-5\cdot3^2\right\rbrack\)

\(=175-\left(3\cdot25-5\cdot9\right)\)

=175-(75-45)

=175-30

=145

e: 555:5+\(256:16^2\)

=111+256:256

=111+1

=112

3.5^x = 60.5⁸ + 15.25⁴

3.5^x = 3.4.5.5⁸ + 3.5.5⁸

3.5^x = 3.5⁹.(4 + 1)

3.5^x = 3.5¹⁰

Vậy x = 10

             Bài làm

\(3.5^x\)= \(60.5^8\)+ \(15.25^4\)

\(3.5^x\)= \(3\).\(4\).\(5\).\(5^8\)+ \(3.5\).\(5^8\)

\(3.5^x\)= \(3\). \(5^9\).\(\left(4+1\right)\)

\(3.5^x\)= \(3\).\(5^9\). \(5\)

\(3.5^x\)= \(3\).\(5^{10}\)

=> x      = 10

Vậy: x=10

đơn giản

gamer

a: =5-78*32

=5-2496

=-2491

b: \(=6\left(9-6\right)=6\cdot3=18\)

c: \(=46\cdot\dfrac{\left(123-42\right)}{81}=46\)

d: \(=181+3-84+8\cdot25\)

=100+200

=300

e: \(=64\cdot35+140\cdot84-1=2240-1+11760\)

=14000-1

=13999

f: \(=3^3+25\cdot8-1=26+200=226\)

g: \(=3+2^4+1=16+4=20\)

h: \(=36:4\cdot3+2\cdot25-1=27+50-1=27+49=76\)

tự làm đi

( 2³ . 9⁴ + 9³ . 4⁵ ) : ( 9² .10 -  9² )