$(x-2).(x+24)=0$
$⇒\left[ \begin{array}{l}x-2=0\\x+24=0\end{array} \right.$
$⇒\left[ \begin{array}{l}x=2\\x=-24\end{array} \right.$
Vậy x ∈ {2;-24}
Đáp án:
x=2 hoặc x=-24
Giải thích các bước giải:
(x-2)(x+24)=0
x-2=0 hoặc x+24=0
x=2 x=-24
CHÚC EM HỌC TỐT NHA ^^
phong trào chống pháp của nhân dân lào và campuchia trong những năm 1918-1939 diễn ra như thế nào
Em có nhận xét gì về thái độ chống pháp của nhà Nguyễn? Nếu đứng đầu nhà Nguyễn lúc bấy giờ em sẽ làm gì?
Mọi người giúp em với mọi người ơi em đang cần gấp em cảm ơn nhiều ạ !!!!
em hãy viết 1 đoạn văn bàn về truyền thống bất khuất, kiên cường của dân tộc việt nam
Điền vào chỗ trống trong các phát biểu sau: a) Góc tạo bởi 2 tia Om và ........ gọi là góc mOn, kí hiệu ........ b) Góc MNP có đỉnh là ....... và hai cạnh là ......... kí hiệu là......... c) Hai đường thẳng AB và CD cắt nhau tại điểm O. Các góc khác góc bẹt là : ..........;.........;............;........
1. Mr Hoan (be) .......................a policeman. 2. He (have) .............................. a diffiult
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Hòa tan 12,4 gam hỗn hợp gồm Fe3O4, MgO, ZnO trong V (ml) dung dịch H2SO4 0,2 M vừa đủ thu được dung dịch X. Sau phản ứng hoàn toàn cô cạn dung dịch X thu được 25,2 gam muối khan. a/ Viết PTHH b/ Tính a giúp mình giải bài này với ạ!!! Mình cần gấp, một tiếng nữa mình phải nộp bài rồi ạ!!!
Trên cùng một nửa mặt phẳng bờ chứa tia Ox vẽ hai tia Oy , Oz , Ot sao cho góc yOz và góc yOt là hai góc kề bù. Chứng tỏ Ox là tia phân giác của góc yOt.
Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions. Question 16. Thousands are staving because of the failure of this year’s harvest. A: hungry B: full C: poor D: rich 3 Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits blank (17). Do you know about the history of Jeans? Jeans are very popular with (17)________people all over the world. Some people say that jeans are the “uniform” of youth. But they haven’t always been popular. The story of jeans (18)________almost two hundred years ago. People in Genoa, Italy made pants. The cloth made in Genoa was (19)________“jeanos”. The pants were called “jeans”. In 1850, a salesman in California began selling pants made of canvas. His name was Levi Strauss. Because they were so strong, “Levi’s pants” became (20)________with gold miners, farmers and cowboys. Six years later Levis began making his pants with blue cotton cloth called denim. Soon after, factory (21)________in the US and Europe began wearing jeans. A: rich B: poor C: young D: old 4 Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct word or phrase that best fits blank (21). Do you know about the history of Jeans? Jeans are very popular with (17)________people all over the world. Some people say that jeans are the “uniform” of youth. But they haven’t always been popular. The story of jeans (18)________almost two hundred years ago. People in Genoa, Italy made pants. The cloth made in Genoa was (19)________“jeanos”. The pants were called “jeans”. In 1850, a salesman in California began selling pants made of canvas. His name was Levi Strauss. Because they were so strong, “Levi’s pants” became (20)________with gold miners, farmers and cowboys. Six years later Levis began making his pants with blue cotton cloth called denim. Soon after, factory (21)________in the US and Europe began wearing jeans. A: drivers B: farmers C: workers D: cowboys 5 Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. Question 13. Helen: “What a lovely house you have!” Mary: “__________________” A: Of course not. it’s not costly. B: No problem C: I think so. D: Thank you. Hope you will drop in. 6 Choose the word whose underlined part is pronounced differently from the others. A: visited B: celebrated C: persuaded D: looked 7 Choose the correct sentence (A, B, C or D) made from the suggested words. Question 22. Teacher’s Day/ celebrate/ twentieth/ November. A: Teacher’s Day was celebrated on the twentieth of November. B: Teacher’s Day celebrates on the twentieth of November C: Teacher’s Day is celebrated on the twentieth of November. D: Teacher’s Day celebrated on the twentieth of November 8 Choose the correct sentence (A, B, C or D) that has the same meaning to the given one. Question 24. “Why don’t you use a password to protect your files?”, An said to me. A: An encouraged me to using a password to protect my files. B: An advised me to used a password to protect my files. C: An asked me why I didn’t use a password to protect my files. D: An advised me to use a password to protect your files. 9 Choose the best answer A, B, C or D to complete the sentence. Question 9. What __________________ if you saw a UFO? A: did you do B: will you do C: would you do D: do you do 10 Mark the letter A, B, C or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) to each of the following questions. Question 15. As a government official, Benjamin Franklin often traveled abroad. A: widely B: secretly C: overseas D: alone
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