Ai giải thích cách xác định số nghiệm thực phương trình sau giúp mình với. Đa tạ.

-2x+3.{12-2[3x-(20+2x)-4x]+1}=45

(6a+1) chia hết (3a-1) tìm a mih cám ơn nhìu nhoa

CHO PHƯƠNG TRÌNH (ẩn x) : 4x^2 - 25 +k^2 + 4kx = 0 â,Giải phương trình với k=0:k= -3 b,Tìm các giá trị của k để phương trình nhận x= -2 làm nghiệm

suy nghĩ của em về đai dịch covid 19 viết bài văn

1,tìm x a, x* 12,35 + x * 12,65 =875 b, x + x * 2,7 + x * 6,3 = 120 giải mã: * là dấu nhân

Cho 2 đường thẳng d1 và d2 lần lượt có phương trình d1:x+y=1 và d2:x-3y+3=0. Hãy viết phương trình đường d đối xứng với d2 qua đường thẳng d1.

(-113) ×36 ±45 ×(-113) ±(113) ×19 (-12) ×(13) ±13 ×(-22) tim x (-3 ×x)=12 7x-(-14)=21 -3 ×(x-2) ³=81

We are impressed by his...............to help us with the hard mission. A.will B.willing C.willingness D.willingly giúp với ạ

America is known as the land of opportunity. Thousands of people immigrate to the United States every year from different parts of the world to have access to these kinds of opportunities. This is what is known as "the American dream". One of the many reasons America is such a great country is the diversity you see all around. America is one big melting pot of citizens from different backgrounds. America is also home to many of the world's top colleges and universities. The California Institute of Technology is a top world-ranked college that focuses highly on science and engineering. It is located in the city of Pasadena. Harvard University is another top world-ranked college that you might be familiar with. The buildings at Harvard date all the way back to the year 1636, making Harvard the oldest university in the United States. It is located in the state of Massachusetts. University of California, Los Angeles, is another institute worthy of recognition. Located next to Hollywood, UCLA has distinguished itself as a prestigious and selective university due to the number of people who apply for admission throughout the United States. The universities mentioned are but a few of the many other excellent schools that make the United States so outstanding. 1.America is called the land of………… A. dream B. opportunity C. immigration 2. The word immigration in line 1 can be replaced by….. A. come into B. go out of C. travel 3. The California Institute of Technology……… A. ranks first in the world B. is a university focusing on natural sciences C. focuses on science and engineering 4. What is NOT true about Harvard? A. It was founded in 1636 B. It is the oldest university in the world C. It is located in Massachusetts 5. University of California, Los Angeles…….. A. is in Hollywood B. is different from other universities C. has a high number of applications Giúp mik vs, mik cần gấp lắm