Đáp án:
Giải thích các bước giải:
-(5+4y)(5-4y)=-25+16y2
-(5+4y)(5-4y)=-[52-(4y)2]=-(25-16y2)=-25+16y2
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.