giải phương trình ngiệm nguyên:

x²+y²=3(z²+t²)

x²-5x+2=y⁴+y²

GIÚP TỚ VỚI, CẢM ƠN TRƯỚC!!!!!!

you live in a big city. you are spending your holiday in the countryside. write a letter to your friend to tell him(her) about your holiday.Your writing should include:

-The sight

-The accommodation

-The people

-The changes

-Something you are going to do today

put the word into two groups based on their stress patterns:

comfortabla, exhausted, forrtune, relative, improvvement,performer,performance, convenient,imagi, effective, celebrate, illgal, electric

số nhỏ nhất có 7 chữ số khác nhau chia hết cho 5 là 1000000

write 5 activities you like and 5 activities you dislike . why do you like and dislike it