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Câu này con thấy đc
1+1+2+2+3+3+....+100000000+100000000=2(1+2+3+...+100000000)=2x100000000x100000001:2=100000000x100000001
Ta có: `8^111 =(2^3 )^111 =2^(3.111)=2^333`
`4^170 =(2^2 )^170 =2^(2.170)=2^340`
Vì `333<340=>8^111 <4^170`
Ta có: `3^300 =3^(3.100)=(3^3 )^100=27^100`
`5^200 =5^(2.100)=(5^2 )^100 =25^100`
Vì `27>25=>3^300 >5^200`
a: 8^111=2^333
4^170=(2^2)^170=2^340
mà 333<340
nên 8^111<4^170
b: 3^300=(3^3)^100=27^100
(5^200)=(5^2)^100=25^100
mà 27>25
nên 3^300>5^200
x.6+x.14+20x+60x=3300
x.(6+14)+20x+60x=3300
20x+20x+60x=3300
x.(20+20+60)=3300
x.100=3300
x=3300:100
x=33
ai tk minh minh tk lai
x.6+x.14+60.x=3300
=> x.( 6 + 14 + 20 + 60 ) = 3300
=> x . 120 = 3300
=> x = 3300 : 120
=> x = 27,5
k nhé
bạn làm gì vậy
ai k mình mình k lại
ai học giỏi người đó hay
ai học ngu người đó bẩn
ai ăn như lợn người đó béo
=1000000/33
bằng 1000000/33 nhé