f-b-d-c-a-e

\(f\rightarrow b\rightarrow d\rightarrow c\rightarrow a\rightarrow e\)

Thứ tự sắp xếp sẽ là: f-b-d-c-a-e

1 If the teacher's question hadn't been difficult, I could have answered it

2 If he smokes, he will be weak

3 If you don't stop smoking, you won't finish the work on time

4 If you aren't careful, you will make a wrong decision

5 If today weren't cold, we would go swimming

6 If my sister weren't inexperienced, she had been offered the job

c→a→b

c-a-b

\(A=x^6-2x^4-2x^4+4x^2+2x^3-4x\\ A=x^3\left(x^3-2x\right)-2x\left(x^3-2x\right)+2\left(x^3-2x\right)\\ A=\left(x^3-2x\right)\left(x^3-2x+2\right)=3\left(3+2\right)=3\cdot5=15\\ B=x^5-2x^3+3x^3-6x-3x^2\\ =x^2\left(x^3-2x\right)+3\left(x^3-2x\right)-3x^2\\ =\left(x^3-2x\right)\left(x^2+3\right)-3x^2=3\left(x^2+3\right)-3x^2\\ =3x^2-3x^2+9=9\)

hãy trả lời nhanh giúp tớ cái

\(\sqrt{ds^{ }wdsd_{ }d_{ }dw^{ }^{ }w\dfrac{ }{ }ds\dfrac{ }{ }dw\sqrt[]{}w\sqrt[]{}\sqrt[]{}d\sqrt[]{}\sqrt[]{}d\sqrt[]{}wwww}\)

so sánh:

Dòng sông uốn lượn như dải lụa.

nhân hóa:

Sông chở con đò tới bến đỗ bên kia

(đúng không mọi người?)

\(\dfrac{1}{R}=\dfrac{1}{R1}+\dfrac{1}{R2}+\dfrac{1}{R3}=\dfrac{1}{2}+\dfrac{1}{3}+\dfrac{1}{6}=1\Rightarrow R=1\Omega\)

\(\Rightarrow I=\dfrac{U}{R}=\dfrac{6}{1}=6A\)

Chọn B

Câu 2:

\(U=IR=0,6\cdot6=3,6V\)

Chọn A

Câu 3:

\(\left\{{}\begin{matrix}P=I^2R\\P'=\left(\dfrac{I}{4}\right)^2\cdot2R=\dfrac{1}{8}I^2R\end{matrix}\right.\)\(\Rightarrow P'=\dfrac{P}{8}\)

Chọn D

câu 1  : A

câu 2 : thì chịu :0