a) (x-3)^2-(x-1)(x+1)=0

b) (x-2)^2-2x+4=0

c) x^2-3x=40

d) x^4+6x^3-54x-81=0

Trùng biến hình di chuyển bắng

Bài 3: Phân tích đa thức thành nhân tử

$$\begin{gathered} 2{\mathrm{x}}^2-4\mathrm{x}-8{\mathrm{y}}^2+2 \\ 16+2\mathrm{xy}-{\mathrm{x}}^2-{\mathrm{y}}^2 \\ {\mathrm{x}}^2-4+3(\mathrm{x}-2)^2 \\ {\mathrm{x}}^4+2\mathrm{x}^2 -15 \end{gathered}$$

Fill  each of the blanks with a suitable word from the reading passage.

Twenty five (1)                   children have the chance of  learning how to (2)           and (3)              thanks to the (4)                 of a young teacher, Pham Thu Thuy.

Although her idea, at first, met with (5)                   from the parents of the disabled children, more children attended her class later. The teaching work in the special class is (6)                 . For example, in a (7)               lesson, the teacher has to use her (8)           and (9)              to teach the children how to add and subtract. The children are now (10)                 and happy.

flash memory is a type of non-volatile memory can be electronically erased and reprogrammed translate into vietnamese

s cpu stand fofflash memory is a type of non-volatile memory can be electronically erased and reprogrammed translate into vietnamese

1.   my/ I/ doing/ homework/ love.

2.   to/ cinema/ They/ going/ like/ the.

3.   watching/ don't/ We/ TV/ like.

4.   like/ sister/ reading/ doesn't/ My/ magazines.

5.   dad/ music/ enjoys/ My/ to/ listening/ country.

6.   enjoy/ on/ They/ photos/ taking/ holiday.

ai cho em biết  câu này ạ 2x-204:51=32

(3x-1)(2x^2+1)