a: =>(2x-4)=2
=>2x=6
=>x=3
b: =>2^x+9=17
=>2^x=8
=>x=3
c: =>(x-140):7=27-24=3
=>x-140=21
=>x=161
d: =>5^x-1*25=125
=>5^x-1=5
=>x-1=1
=>x=2
i: =>(x-6)^2[(x-6)^2-1]=0
=>(x-6)(x-7)(x-5)=0
=>\(x\in\left\{5;6;7\right\}\)
(2^11+2^10+2^9+...+2^3+2^2+2+1):(2^8+2^4+1)
(nho trinh bay chi tiet do, ai nhanh nhat va giai chi tiet de hieu thi to tick cho)
tim n biet 2(n-3)+11 chia het cho n
(nho giai chi tiet n )
4 nguoi cong nhan lap rap dc 200 chiec may . Trong do ,nguoi thu 1 lap dc 1/4tong chi tiet may .Nguoi thu 2 lap dc 0,4 lan tong chi tiet may.so chi tiet may nguoi thu 3 lap dc bng 50% so chi tiec may nguoi tu 2 lap dc .Tinh so chi tiet may nguoi thu 4 lap dc
Giup gium minh nha ,tks cac ban!!!
Nho ghi ra cach giai nha !!!
nho giai chi tiet se duoc 1 tick va nhanh nhat cam on nhieu
6x+39=5628:28
Ai giai ho minh bai 40 , 41,42,43 trang 13 sach nang cao va phat trien toan 6
Nho giai chi tiet cu the nha , ai lam dung minh tich cho
Bai 1. 12 chia het ( x + 3 )
bai 2. Tim so tu nhien x, biet 6x + 4 chia het cho 2x
cac ban nho giai chi tiet giup minh nha cam on
tim so tu nhien nho nhat khi chia cho 6,7,9 duoc so du theo thu tu 2,3,5
giai chi tiet giup minh nhe
Tong cua 5 so nguyen to la 198. Tim so nguyen to nho nhat trong 5 so do?
GIAI CHI TIET NHA, MIK TICK CHO
tim so tu nhien n lon nhat nho hon 150 ma khi chia cho 2,3,4,5,6 deu du 1
GIAI CHI TIET ^_^
