1*2*4+2*4*8+4*8*16+8*16*32/1*3*4+2*6*8+4*12*16+8*24*32 = 56744
1*2*4+2*4*8+4*8*16+8*16*32/1*3*4+2*6*8+4*12*16+8*24*32 = 56744
#nhớ tk
Các câu hỏi tương tự
2×4+2×4×8+4×8×16×8×16×32
3×4+2×6×8+4×12×16+8×24×32
Rút gọn psố: 2×4+2×4×8+4×8×16+8×18×32 phần 3×3+2×6×8+4×12×16+8×24×32
tính:
2 . 4 + 2 . 4 . 8 + 4 . 8 . 16 + 8 . 16 . 32 / 3 . 4 + 2 . 6 . 8 + 4 . 12 . 16 + 8 . 24 . 32
chú ý:dấu gạch chéo là phân số
giải chi tiết nha
Tinh gia tri cua phan so: A= 2 x 3 + 2 x 4 x 8 + 4 x 8 x 16 + 8 x 16 x 32/ 3x 4 + 2 x 6 x 8 + 4 x 12 x 16 + 8 x 24 x 32
1) 15 - 98 + 91 - 75 + 98 - 91 - 13
2) 5 - ( 4 - 7 + 12 ) + ( 4 - 7 + 12 ) - 10
3) 20 - ( 25 - 98 + 12 ) + ( 25 - 98 - 72 )
4) - ( 17 - 4 + 13 + | -17 | + 13 )
5) | -16 | - ( 5 - 8 + 7) - ( - 5 ) - 8
6) -20 + ( 3 - 16 + 7 ) - ( 3 - 16 + 7 )
7) 32 - ( 5 - 8 + 32 ) + ( 5 - 8 + 6 )
8) -20 - ( 25 - 11 + 8 ) + ( 25 - 8 + 20 )
Bài 1 Tính nhanh
a) -3/7 + 5/13 + 3/7
b) -5/21+-2/21+8/24
c) -5/11+(-6/11+2)
d) (-1/32+1/2)+15/32
e)5/17+ -6/13 + 3/4 + 7/-13+12/17
f) 7/23+-18/18+-4/9+16/23+-5/8
g)1/3+-3/4+3/5+-1/36+1/15+-2/9
h)-1/2+1/3+-1/4+-2/8+4/18+4/9
26.108-26.12/32-28+24-20+16-12+8-4
27.4500+135.550.2/2+4+6+...+14+16+18
{ 1/2 + 1/4 + 1/8 + 1/16 } : x = 1/2 + 1/6 + 1/8 + 1/12 + ....+ 1/32
tính nhanh:
a)1/2+1/6+1/12+1/20+1/30+1/42
b)1/2+1/4+1/8+1/16+1/32
c)1/2+1/4+1/8+...+1/256