(-0.2)^2x5-(8^2x9^5)/3^9x4^3
2x5=
4x6=
8x3=
2x9=
Trả lời :
2 . 5 = 10
4 . 6 = 24
8 . 3 = 24
2 . 9 = 18
Chúc bạn học tốt nhé !
1+2+3+4+5+6+7+8+9X4-2+15=
(1+2+3+4+5+6+7+8+9)x(2x9-18)
(1+2+3+4+5+6+7+8+9)x(2x9-18)
=(1+2+3+4+5+6+7+8+9)x(18-18)
=(1+2+3+4+5+6+7+8+9)x0
=0
P/s: lần sau đăng đúng môn nha
1+2+3+4+5+6+7+8+9x4:2+99+1
Số cần tìm là:
1+2+3+4+5+6+7+8+9x4:2+99+1=163
Đs:163
đung 100%
1+2+3+4+5+6+7+8+9x4:2+99+1
=1+2+3+4+5+6+7+8+36:2+99+1
=1+2+3+4+5+6+7+8+18+99+1
=154
2x2=
2x3=
2x4=
2x5=
2x6=
2x7=
2x8=
2x9=
2x10=
2x2=4
2x3=6
2x4=8
2x5=10
2x6=12
2x7=14
2x8=16
2x9=18
2x10=20 k mk nha
2x2=4
2x3=6
2x4=8
2x5=10
2x6=12
2x7=14
2x8=16
2x9=18
2x10=10
\(2x2=4\)
\(2x3=6\)
\(2x4=8\)
\(2x5=10\)
\(2x6=12\)
\(2x7=14\)
\(2x8=16\)
\(2x9=18\)
\(2x10=20\)
6 x5/3 7:8/4+1/3 2x5/8-1/2 3/7:5/6x1/4
10
\(\dfrac{23}{6}\)
\(\dfrac{3}{4}\)
\(\dfrac{9}{70}\)
6 x5/3=10 7:8/4+1/3=23/6 2x5/8-1/2=3/4 3/7:5/6x1/4=9/70
2x1=
2x2=
2x3=
2x4=
2x5=
2x6=
2x7=
2x8=
2x9=
2x10=
= 2
= 4
= 6
= 8
= 10
= 12
= 14
= 16
= 18
= 20
mik mới khôi phục đc điểm âm mà giờ lại bị trừ tiếp, các bạn giúp mik nha, mik sẽ giúp lại 100%
cảm mơn các bạn trc
2 x 1 = 2
2 x 2 = 4
2 x 3 = 6
2 x 4 = 8
2 x 5 = 10
2 x 6 = 12
2 x 7 = 14
2 x 8 = 16
2 x 9 = 18
2 x 10 = 20
Ghét nhứt con nek : <a class="" data-uid="762186" href="/thanhvien/shu_libra9" data-hasqtip="true" aria-describedby="qtip-1">Thảo</a>
Tính nhanh
a.38/7+(16/7-5/3)
b.29/9-(14/9+11/9)
c.(2/7+3/8+12/7+5/8 )-19/63
d.3/7x4/9+4/9x4/7_4/9
a, \(\dfrac{38}{7}\) + ( \(\dfrac{16}{7}\) - \(\dfrac{5}{3}\))
= \(\dfrac{38}{7}\) + \(\dfrac{16}{7}\) - \(\dfrac{5}{3}\)
= \(\dfrac{54}{7}\) - \(\dfrac{5}{3}\)
= \(\dfrac{162}{21}\) - \(\dfrac{35}{21}\)
= \(\dfrac{127}{21}\)
b, \(\dfrac{29}{9}\) - ( \(\dfrac{14}{9}\) + \(\dfrac{11}{9}\) )
= \(\dfrac{29-14-11}{9}\)
= \(\dfrac{4}{9}\)
c, ( \(\dfrac{2}{7}\) + \(\dfrac{3}{8}\) + \(\dfrac{12}{7}\) + \(\dfrac{5}{8}\) ) - \(\dfrac{19}{63}\)
= ( \(\dfrac{2+12}{7}\) + \(\dfrac{3+5}{8}\)) - \(\dfrac{19}{63}\)
= \(\left(1+2\right)\) - \(\dfrac{19}{63}\)
= \(3-\dfrac{19}{63}\)
= \(\dfrac{189}{63}\) - \(\dfrac{19}{63}\)
= \(\dfrac{170}{63}\)
d, \(\dfrac{3}{7}\) . \(\dfrac{4}{9}\) + \(\dfrac{4}{9}\) . \(\dfrac{4}{7}\) - \(\dfrac{4}{9}\)
= \(\dfrac{4}{9}\) . ( \(\dfrac{3}{7}\) + \(\dfrac{3}{7}\) ) - \(\dfrac{4}{9}\)
= \(\dfrac{4}{9}\) . \(1-\dfrac{4}{9}\)
= \(\dfrac{4}{9}\) - \(\dfrac{4}{9}\)
= 0
2x2=
2x3=
2x4=
2x5=
2x6=
2x7=
2x8=
2x9=
2x10=
Ai nhanh mk tick!
2x2=4
2x3=6
2x4=8
2x5=10
2x6=12
2x7=14
2x8=16
2x9=18
2x10=20