1. I have never had a (delicious) ....more delicious.... meal than that.
2. This shirt is too small. I need a (large) ....larger.... size.
3. It’s (cheap) ....cheaper.... to go by car than to go by train.
4. A new house is (expensive) ....more expensive.... than an old one.

5. His lob is (important) ....more important.... than mine.
6. Nobody is (happy) ....happier.... than Miss. Snow.
7. John is much (strong) .....stronger.... than I thought.
8. Benches are (comfortable) ....more comfortable.... than arm-chairs.
9. Bill is (good) ....better.... than you thought.
10.Sam’s conduct is (bad) ....worse.... than Paul’s.

Lưu ý m > 0

\(\hept{\begin{cases}X+\frac{1}{2}=\frac{3}{5}\\X+\frac{1}{2}=-\frac{3}{5}\end{cases}}\hept{\begin{cases}X=\frac{1}{10}\\X=-\frac{11}{10}\end{cases}}\)

Ix+1/2I=3/5

=>x+1/2=3/5 hoặc x+1/2= -3/5

=>x= 1/10 hoặc x= -11/10

x^2+2x+1+1=(x+1)^2+1 \(\ge1>0\)

300 lần mình tính 3 lần rồi

\(x^4+2x^3-2x^2+2x-3=\left(x^4-x^3\right)+3\left(x^3-x^2\right)+\left(x^2-x\right)+\left(3x-3\right)\)

\(x^3\left(x-1\right)+3x^2\left(x-1\right)+x\left(x-1\right)+3\left(x-1\right)\)

\(\left(x-1\right)\left(x^3+3x^2+x+3\right)\)

\(\left(x-1\right)\left[\left(x^3+x\right)+\left(3x^2+3\right)\right]=\left(x-1\right)\left[x\left(x^2+1\right)+3\left(x^2+1\right)\right]\)

\(\left(x-1\right)\left(x^2+1\right)\left(x+3\right)\)

mik nghĩ là số 40

bạn tk mik nha

180

tk mk

mk tk lại

hứa đấy

x = 0 và y = 500

Chúc bạn học tốt!