Question

[Linh Đan]

Sử dụng tính chất a.b +(-) a.c = a.(b+c)

1. (15 . 13 - 21) : 2 + 108

2. 4^2 . 444446 - 4^3 . 111111

3. (5^3015 - 5^3013) : 5^3013

4. 125 - [ 65 - (7 - 3)^3 ]

5. 123 . 456456 - 228. 246246

6. (548 . 13 + 1096) . 43 : 15 . 86

7. (3^13 : 99 - 15 . 3^14) : (3^17 : 3^2)

Cảm ơn !

Answer 1

[Nguyễn Lê Phước Thịnh]

1: =(195-21):2+108=174:2+108=87+108=195

2: \(=16\left(444446-444444\right)=16\cdot2=32\)

3: \(=\dfrac{5^{3015}}{5^{3013}}-\dfrac{5^{3013}}{5^{3013}}=25-1=24\)

4: \(=125-\left[65-4^3\right]=125-1=124\)

6: \(=8210\cdot43:15\cdot86=2024038.667\)