1,53x82+1,53x19-1,53
= 1,53x(82+19-1)
= 1,53 x 100 = 153
1,53x82 + 19x1,53 -1,53 = 1,53( 82+19-1) =1,53x100=153
Tinh nhanh
3.25.8+4.37.6+2.38.12
Dau cham la dau nhan nhe cac ban
tui dot toan lam. bai ne:20062006*2007-20072007*2006 tinh nhanhnhe, dau *la dau nhan nhe
-32/27-(3.x-7/9)3=-24/27
cac banlam nhanh nha minh can gap
dau cham la dau nhan nhe
tinh cach hop ly nhat:
864.48-432.96:864.48.432
p/s: dau cham la nhan nhe
2 + x : 7 = 10
chữ x la chữ ích sờ nha cac bn ko phai la dau nhan dau nhe
tinh nhanh:
(1.5.6+2.10.12+4.20.24+9.45.54):(1.3.5+2.6.10+4.12.20+9.27.45)
luy y: dau "."la dau nhan
Cho tia Ox, A thuoc Ox , B thuoc Ox .
OA =3 Cm, OB = 9cm
M la trung diem cua AB
a) tinh AB
b) CM ; A la trung diem cua OM
c)tinh OM
Xin loi cac cau vi nhan ko dau nhe .
ghi ca loi giai ra cho minh nhe
ai nhanh se dc 3 tick
minh hua.
thanks
Tinh nhanh:
6+6.9+6.9^2+6.9^3+...+6.9^99
Giup minh nhe!(cac dau cham la dau ngoac)
tim so tu nhien x biet
(2.x+1)mu 5 /(2.n+1)mu 2=1
2 mũ x+2 .2 mu x+........+10.2 mu x =10 . 11
dau / nay la dau chia
dau . nay la nhan do nhe!!!!
