-1^2+2^2-3^2+4^2-...-99^2+100^2 (sử dụng hằng đẳng thức lớp 8)

Practice the sequences of words by giving a series of instructions.
FIRST, THEN, NEXT, AFTER THAT, FINALLY

Reminding someone of something
MAKE SURE
REMEMBER TO
BE SURE TO
DON'T FORGET TO

Topic 1: Brushing your teeth
Topic 2: Washing the dishes in the sink

2. MAKE A CONVERSATION
starting and closing conversation
- NEW TEACHER
- NEW NEIGHBOR

Làm dài dài giúp em vs.Thanks ạ

x²(x²+4)-x²-4=0