Phần mềm soạn thảo văn bản Microsoft Word do hãng phần mềm sản xuất nào?

A. IBM

B. AC Soft

C. Microsoft

D. software

= 3(x²-2xy+y²-4z²)

=3[(x-y)²-(2z)² ]

=3(x-y-2z)(x-y+2z)

1.middle

2.refrigeretor

3.far

4.so

5.what

6.let's

7.most

9.on

My brother prefers playing sports to watching TV.

Từ âm sang dương

49 x 11 = 539                             888888 : 11 = 80808

78 x 11 = 858                              6666 : 11 = 606

84 x 11 = 924                                 2299 : 11 = 209

46 x 11 = 506                                  446699 : 11 = 40609

99 x 11 = 1089                                 3355779911 : 11 = 305070901

1. In spite of breaking his leg, he managed to get out of the car.

2. It is for a month I haven't met may grandmother.

3. Our summer vacation is for two-month.

4. It took my father two hours to prepare my bike.

5. I'd like playing out door games than indoor games.