nho

I Transformation

16. I know a few English words. I can't read a newspaper in English.

-> I don't know

17. The children could't go skiing because the sea was very rough

-> The sea eas

I Transformation

16. I know a few English words. I can't read a newspaper in English.

-> I don't know

17. The children could't go skiing because the sea was very rough

-> The sea eas

Tính (khải triển bằng đẳng thức)

\(2) (x+3)(x-3)\)
\(6)(3xy+2y^2)(3xy-2y^2)\)

\(9) (2a+3b-4c)(2a-3b+4c)\)

Tính (khai triển hằng đẳng thức)
\(2) (x+3)^2\)
\(5) (x-6)^2\)
\(8) (3x+1)^2\)
\(11) (3x+2)^2\)
\(14) (x+2y)^2\)
\(17) (3x-2y)^2\)

Môn Hóa học

Transformation
11 Iam very lucky because I have many good friends
-> Iam lucky
12 The table is too heavy. The boy can't lift it
-> The bag isn't
13 The ceiling is too high. I can't reach it
-> Iam not
14 The book was so interesting that I read it twice
-> the book was
15 The essay is too long. He can't finisn it in 15 minutes
-> He doesn't have