a, (3x - 11).(y + 11) = 15

b, (x - 1).(y - 2) = 3

1. I _goes_ to school at 6 every morning.

2. I, Lan and Mary _watchs_ TV after school every day.

3. My friends Oanh and Lien often _play_ tennis.

4. My mom _cooks_ every evening.

5. Lan _ goes_ to school with her mom today.

#Mìnhkhôngchắcchắnlắmvềđápán

#Saithìsorryạ

h, 316 - ( 5². 2² + 2². 9) : 2³ - 3. 2³

= 316 - ( 25 . 4 + 4. 9) : 8 - 3 - 8

= 316 - ( 100 + 36) : 8 - 3 - 8

= 316 - 136 : 8 - 3 - 8

= 316 - 17 - 3 - 8

= 108

e,

= 220 - [3⁵ - (-58)²]

= 220 - [ 243 - (-3361)]

= 220 - [ 243 + 3361]

= 220 - 3607

= -3387

f, [504 - (5².8 + 70) : 3³ + 6] :125

= [ 504 - ( 25.8 +70) : 27 + 6] : 125

= [504 - ( 200 + 70 ) : 27 + 6] : 125

= [ 504 - 270 : 27 + 6] : 125

= [ 504 - 10 + 6 ] :125

= [ 494 + 6 ] : 125

= 500 : 125

=> 4