x-[-19]-[-11]=0

x + 19 + 11 = 0

x + 30 = 0

x = 0 - 30

x = -30

x=-30 nhé

2 - x = 17 - (-5)

2 - x = 17 + 5

2 - x = 22

x = 2 - 22

x = -20

x=-20 nhé

x + 7 = [-5] + [-3]

x + 7 = -8

x = -8 - 7

x = -15

-15

đc đó

các bn vào cho em ý GP đi :)

Giải:

Để nguyên vì nước hết lòng đó là: trung (lòng trung thành hết lòng vì nước non)

Thêm huyền thành trùng (Các thứ được xếp chồng lên nhau, trùng nhau)

Thay ngã thành trũng(Chỗ lõm vào, hố sâu trũng)

Kết luận từ để nguyên là từ: Trung.

từ để nguyên là từ chung

Ha Long Bay is one of the most beautiful natural wonders of Vietnam. Located in Quang Ninh Province, the bay is famous for its emerald-green water and thousands of limestone islands rising majestically from the sea. Visitors can explore stunning caves, hidden beaches, and peaceful fishing villages scattered throughout the bay. The scenery looks especially magical at sunrise and sunset, when the sunlight reflects off the water like a painting. Ha Long Bay is not only a popular tourist destination but also a UNESCO World Heritage Site, recognized for its unique geological value. For many people, a trip to Ha Long Bay is an unforgettable experience filled with beauty and tranquility.

TÍCH CHO TUi

Ha Long Bay is one of the most famous tourist destinations in Vietnam. It is located in Quang Ninh province. The bay is beautiful with thousands of limestone islands and caves. The water is clear and blue. When visiting Ha Long Bay, tourists can take a boat trip to see the scenery and take many photos. They can also enjoy delicious seafood and swim in the cool water. I really love Ha Long Bay because it is a natural wonder of my country.

2x=(-13)+7

2x=(-6)

x=(-6):2

x=(-3)

-3

Olm chào em. Đây là toán chuyên đề phân tích đa thức thành nhân tử. Hôm nay, Olm sẽ hướng dẫn các em giải chi tiết dạng này bằng cách tách hạng tử như sau:

Giải:

P = \(x^4\) + 2025\(x^2\) + 2024\(x+2025\)

P = \(x^4+2025x^2+2025x-x+2025\)

P = (\(x^4\) - \(x\)) + (2025\(x^2\) + 2025\(x\) + 2025)

P = \(x\left(x^3-1\right)\) + 2025.(\(x^2\) + \(x\) + 1)

P = \(x\).(\(x-1\))(\(x^2+x+1\)) + 2025(\(x^2+x+1\))

P = (\(x^2+x+1\))(\(x^2-x+2025\))

Phân tích đa thức \(P = x^{4} + 2025 x^{2} + 2024 x + 2025\).

Ta nhóm các hạng tử:
\(P = \left(\right. x^{4} + 2024 x \left.\right) + \left(\right. 2025 x^{2} + 2025 \left.\right) = x \left(\right. x^{3} + 2024 \left.\right) + 2025 \left(\right. x^{2} + 1 \left.\right)\).

Tiếp tục quan sát, có thể thử tách theo kiểu \(P = \left(\right. x^{2} + 1 \left.\right) \left(\right. x^{2} + 2025 \left.\right) + 2024 x\).

Bước kiểm tra các nghiệm nguyên: nghiệm nguyên của đa thức chia hết cho 2025 (hệ số tự do) → thử x = 1, x = –1, x = 2025, x = –2025…

Sau khi kiểm tra, nghiệm nguyên duy nhất là x = 1 → đa thức có thể phân tích được dạng:
\(P = \left(\right. x - 1 \left.\right) \left(\right. x^{3} + x^{2} + 2026 x + 2025 \left.\right)\).

Như vậy, đa thức đã được phân tích thành nhân tử:
\(P = \left(\right. x - 1 \left.\right) \left(\right. x^{3} + x^{2} + 2026 x + 2025 \left.\right)\).

To stay healthy, I try to follow good daily habits. I usually do exercises like jogging and stretching every morning for about 30 minutes. I eat three meals a day: breakfast, lunch, and dinner. I also drink about eight glasses of water every day to stay hydrated. After school, I relax by reading books or listening to music. Sometimes I play outside with my friends. These habits help me feel strong, happy, and ready to learn every day. Staying healthy is very important!

To maintain good health, I try to follow a balanced daily routine. First, I go jogging in the park for thirty minutes every morning to strengthen my muscles and boost my energy. Regarding my diet, I eat three main meals a day, focusing on fresh vegetables and lean protein while avoiding fast food. Hydration is also crucial, so I make sure to drink at least two liters of water throughout the day. Finally, to relax and reduce stress after studying, I often listen to soothing music or read a good book before going to bed.

2(\(x-33\)) - 3.(\(x-43\)) = 96 - 115

2\(x\) - 66 - 3\(x\) + 129 = 96 - 115

2\(x-3x\) = 96 - 115 + 66 - 129

- \(x\) = - 19 + 66 - 129

- \(x\) = 47- 129

- \(x\) = -82

\(x=-82:\left(-1\right)\)

\(x=-\) 82

Vậy \(x=-82\)