cách viết biểu thức `b^2`-4ac Pascal là:
cách 1
b*b-4*a*b
cách 2
sqr(b)-4*a*b
Cách viết biểu thức b^2-4ac Pascal là:
b*b-4*a*c
My students are preparing the hall for their meeting
=>The teacher informed
Choose the best answer.
We are looking for ____ place to spend ____ night.
Please turn off ___ lights when you leave ___ room.
I like _____ colorful costumes of ____ ethnic minority people in Vietnam.