5^20:(5^15.6+5^15.19)
5^20:[5^15.(6+19)]
5^20:(5^15.25)
5^20:(5^15.5^2)
5^20:5^17
5^3=125 Đáp án: 125
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thuc hien phep tinh
\(\frac{5\cdot4^{15}.9^9-4.3^{20}.8^9}{5.2^9.6^{19}-7.2^{29}.27^6}\)
minh can cach lam
ai nhanh minh tk
Bai 1 : Thuc hien cac phep tinh ( tinh nhanh neu co the ) :
a) \(2\frac{1}{3}-\frac{1}{3}\)\(:\)\(\left[15\%+\left(-\frac{2}{3}+0,4.5\right)\right]\)
GIUP MK VOI NHA
MK DAG CAN GAP
AI LAM NHANH VA DUNG THI MK SE TICK CHO NHA ^ _ <
bai 1 :thuc hien phep tinh
a)\(\frac{-5}{2}:\left(\frac{3}{4}-\frac{1}{2}\right)\) b) \(11\frac{3}{13}-\left(2\frac{4}{7}+5\frac{3}{13}\right)\) c)\(\left(\frac{-5}{24}+0,75+\frac{7}{12}\right):\left(-2\frac{1}{4}\right)^2\)
AI LAM NHANH VA DUNG THI MK SE TICK CHO NHA
MK DAG CAN GAP !!!!!!! CAC BAN LAM NHANH LEN NHA
thuc hien phep tinh
( 5*4^15*9-4*3^20*8^9) /( 5*2^9*6^19-7*2^29*27^6)
ai giai duoc se duoc 3like
bai 1 tim x,biet:
a) 126 :x,210:x va 15<x<30
Bai 2: thuc hien phep tinh
a) -25+33
b) 7mu9 :7mu 5
bai 1, thuc hien phep tru
a, (a-1)-(a-3)
b, (2+b)-(b+1)
c, -(1-2)+(5-c)
d, -(a-c)-(a-b+c)
bai 2, tim x, biet
a, -x+8= -17
b, 35-x=37
c, -19-x= -20
d, 2130-(x+130)+72= -64
giup minh voi, minh can gap, cam on cac ban nhieu
Bai 1:thuc hien phep tinh
A,48×19+48×115+134×52
B,56:54+23×22-12017
giup minh voi!!!!!
bai 1tinh : 1 + 2 + 3 + ... + 1998 + 1999bai 2 : tinh tong cua a) tat ca cac chu so tu nhien co 3 chu sob) tat ca cac so le ci 3 chu sobai 3 : tinh tong a) tat ca cac so : 2 , 5, 8,11, ... , 296b) tat ca cac so : 7 , 11 ,15 , 19 , ..... , 283bai 12cho day soa) 1 , 4 , 7 , 10 , 13 ,19b) 5 , 8 , 11 , 14 , 17 , 20 , 23 , 26 , 29c) 1 , 5 , 9 , 13 , 17 , 21 , ......hay tim cong thuc bieu dien cac day so trenmong cac ban lam ho minh minhdang can gap ban nao tra loi dau tien minh se tich ngay lap tuc
Đọc tiếp
bai 1
tinh : 1 + 2 + 3 + ... + 1998 + 1999
bai 2 : tinh tong cua
a) tat ca cac chu so tu nhien co 3 chu so
b) tat ca cac so le ci 3 chu so
bai 3 : tinh tong
a) tat ca cac so : 2 , 5, 8,11, ... , 296
b) tat ca cac so : 7 , 11 ,15 , 19 , ..... , 283
bai 12
cho day so
a) 1 , 4 , 7 , 10 , 13 ,19
b) 5 , 8 , 11 , 14 , 17 , 20 , 23 , 26 , 29
c) 1 , 5 , 9 , 13 , 17 , 21 , ......
hay tim cong thuc bieu dien cac day so tren
mong cac ban lam ho minh minhdang can gap ban nao tra loi dau tien minh se tich ngay lap tuc
Bai 1: thuc hien phep tinh
A,17×85+15×17-120
B,75-(3×52-4×23)
C,A=12:{390:[500-(125+35×7)]}
D,B=10+12+14+........96+98
Ghi ro loi giai ra nhe !! Lam dung minh tick cho