It is over twenty years since I last got in touch with them
->

It is over twenty years since I last got in touch with them
->

Đồ thị hàm số y=3x+2/x−2 có bao nhiêu đường tiệm cận

4/ They couldn't put up the tent because of the strong wind

-> Without

5/ They had a terrible acccident because it rained heavily

-> But for

6/ Without your consideration, my application for the job would have I turned down

-> If it

7/ The heavy rain prevented us from getting there

-> Without

1. If she does not hungry, she'll be late

-> Should

2/ We can't listen to you because of the noise

-> If

3/ She didn't go over her illness as we expected because she stopped using the medicine

-> Had she

Tại hai điểm A,B cách nhau 15 cm trong không khí có hai điện tích q1 = -12.10^-6C, q2=3.10^-6C. Xác định độ lớn cường độ điện trường do hai điện tích này gây ra tại điểm C. Biết AC=20cm, BC=5cm

Giải pt ( đưa về pt bậc 2 )

cos²2x - 6sinx.cosx - 3 = 0

Giải pt ( đưa về pt bậc 2 )

cos²3x - 5sin3x + 5 = 0

Giải pt ( đưa về pt bậc 2 )

1. tan²x - 5tanx + 6 = 0

2. 3cos²2x + 4cos2x + 1 = 0

Giải pt ( đưa về pt bậc 2 )

cos²2x + 3sin2x - 3 = 0