Thực hiện phép tính: (x³ – 8) : (x – 2)

A.   x² + 2    B.   x² – 2x + 4   

C.   x² – 4    D.   x³ + 2x + 4

Câu 1. Chọn câu đúng:

A. 24x⁴y³ : 12x³y³ = 2xy           B. 18x⁶y⁵ : (-9x³y³) = 2x³y²

C. 40x⁵y² : (-2x⁴y²) = -20x        D. 9a³b⁴x⁴ : 3a²b²x² = 3ab³x²

Tìm x, biết: 2x (x – 5) – 2x² = 30

1 came - were watering

2 was talking

3 was practising - was reading

4 were climbing - visited

5 was talking - entered

6 was making - went

7 was crossong - stepped - fell

8 began - was planting

9 arrived - was writing

10 were walking - heard

#include <bits/stdc++.h>

using namespace std;

long long a[5],i,t1,t2;

int main()

{

t1=0;

t2=0;

for (i=1; i<=5; i++)

{

cin>>a[i];

if (a[i]%2==0) t1=t1+a[i];

else t2=t2+a[i];

}

for (i=1; i<=5; i++) cout<<a[i]<<" ";

cout<<endl;

cout<<t1<<" "<<t2;

return 0;

}