1+2+3+4+5= ai k minh minh k lai
1+1^2+1^3+1^4+...+1^10=
ai k minh minh k lai
1+12+13+...+110
=1+1+1+...+1 (10 số 1)
=1 x 10
=10
1+1^2+...+1^10=1+1+...+1+1=1x10=10
nho k
nhe
Ai lai choi cai kieu tu hoi tu tl vay ban!
177 : [2 . ( 4²-9) +3² . (15-10)
ai k minh minh k lai
\(177:\left[2.\left(4^2-9\right)+3^2.\left(15-10\right)\right]\)
\(=177:\left[2.\left(16-9\right)+9.\left(15-10\right)\right]\)
\(=177:\left[2.7+9.5\right]\)
\(=177:\left[14+45\right]\)
\(=177:59\)
\(=3\)
177:[2.(4²-9)+3².(15-10)
=177 :[2.(16-9)+9.(15-10)
=177: [2.7 +9.5]
=177:[14+45]
=177:59
=3
tim x biet
x - 23,4 = 8,4x2
8/3 -x= 2/5:4/5
ai k minh roi minh se k lai
x - 23,4 = 84, x 2
x - 23,4 = 16,8
x = 16,8 + 23,4
x = 40,2
\(\frac{8}{3}\)- x = \(\frac{2}{5}\): \(\frac{4}{5}\)
\(\frac{8}{3}\)- x = \(\frac{1}{2}\)
x = \(\frac{8}{3}\)- \(\frac{1}{2}\)
x = \(\frac{13}{6}\)
k cho mk nhé
x - 23,4 bằng 16,8
x bằng 16,8 + 23,4
x bằng 40,2
1+5=
ai k minh minh k lai
75+(125/5^3)=
AI K MINH MINH K LAI
75+(125/5^3)=75+125/125=75+1=76
AI K MINH MINH K LAI
\(75+\left(\frac{125}{5^3}\right)\)
\(=75+\frac{125}{125}\)
\(=75+1\)
\(=76\)
5^1x5^2=...
ai k minh minh k lai
51 x 52
= 5 x 1 x 5 x 5
= 5 x 5 x 5
= 125
Vậy : 51 x 52 = 125
75/5^2=
ai k minh minh k lai
\(\frac{75}{5^2}=\frac{75}{25}=75:25=3\)
x.10^2=10^4
ai k minh minh k lai
x.10^2=10^4
x=10^2
x=100
nho k nha minh k lai
1+2+1=
ai k minh minh k lai
1 + 2 + 1 = 2 + 2 = 3 + 1 = 4
mình k bán rồi nhớ k lại mình nha
1+2+1=2+3=4
k nhe chuc ban hoc gioi