(x+1)(x^2-x+1)

= x^3-x^2+x+x^2-x+1

= x^3-x^2+x^2+x-x+1

= x^3+1

1. have

2. has

3. have

4. have

5. have

6. has

1. too

2. enough

3. too

4x(7x-5)-7x(4x-2)=-12

\(\Rightarrow\)28\(^{ }\)x^2-20x-28x^2+14x=-12

\(\Rightarrow\)-20x+14x=-12

\(\Rightarrow\)-6x=-12

\(\Rightarrow\)x=2

b, 3x(2x-4)-6x(x+5)=x-1

\(\Rightarrow\)6x^2-12x-6x^2-30x=x-1

\(\Rightarrow\)-42x=x-1

\(\Rightarrow\)-42x-x=-1

\(\Rightarrow\)-43x=-1

\(\Rightarrow\)x=1/43

Gọi số cần tìm là x
Thương của x chia cho 64 và 67 là a
Theo giả thiết ta có:
x = 64a+38
và x = 67a+18
<=> 64a+38 = 67a+14
<=> (-3)a = (-24)
<=>  a= 8
Vậy số cần tìm là x = 64x8+38 = 550

Thì chúng sẽ đẩy nhau

VI. 1. Hoang always gets good grades because he^,s a hard-working student in our class. 2. Mai has a lot of friends. She is very sociable. 3. Nam often makes other people laugh because he likes telling jokes 4. I open the box and look inside. 5. After his parents^, dead , he was sent to an orphanage. 6. The red car is more expensive than the blue one. 7. Let me help you lift the box.- No, thank you. I^,m strong enough to lift it alone. 8. That was the most exciting play I^,ve ever seen.

1. Hiền pháp 1946 2. Hiến pháp 1959 3. Hiến pháp 1980 . 4. Hiến pháp 1992 5. Hiến pháp 2013