1.The Ford car left Hanoi for Nghe An and the Audi car left Nghe An for Hanoi at the same time. The ratio of their speeds (the Ford car to the Audi car) was 4:3. The Ford car decreased its speed by 25% and the Audi car increased its speed by 25% after they had passed each other. When the Ford car reached Nghe An, the Audi car was still 20 km away from Hanoi. The distance between Hanoi and Nghe An is .... km
2.The smallest value of A= \(\frac{x-y}{x^{4}+y^{4}+6}\) is.....
the value of \(x^4+\frac{1}{x^4}\)when \(x+\frac{1}{x}=3\)
find the smallest positive integer k for which \(\sqrt{6075\cdot k}\) is a whole number
Answer : the smallest positive integer k is ......
2. find the value of k such that the remainder is the greatest
k/13= 11Rx
K=
Find the minimum value of the expression .
Answer: The minimum value is
The polynomial x3 - ax2 + bx - 2010 has three positive integer roots. What's the smallest possible value of a?
Given the equation \(\frac{3}{x-3}\)- \(\frac{5}{x-5}\) = \(\frac{4}{x-4}\)- \(\frac{6}{x-6}\). The average (arithmetic mean ) of all roots of this equation is.....
give that \(x^4+ax+b\) is divisible by \(x^2-4\) . find the value of a +b
If x+3 is a factor of both 2x^2-x+m and 3x^2-2x+6,then the value of m+n is
Find the value of k such that x3 + kx2 + (4 - k)x - 35 is divisible by x - 7.
Answer: k = ........