-How to find the fourth root of 16?

-How to find the fourth root of 16?

There is no solution in real numbers, because negative numbers cannot be even square
But in the complex number, (- 16) ^ (1 / 4) = ± 2I

When looking for the median, should it be repeated?

Median (median) statistical term. After sorting the data, the value in the middle. That is, the data is divided into two parts, one is greater than the value, the other is less than the value. The position of median: when the number of samples is odd, (n + 1) / 2; when the number of samples is even, N / 2 is similar to this: quartile

Xiaohua solved the equation 2x-1 / 3 = x + A / 3-1. When the denominator is removed, the - 1 on the right side of the equation is not multiplied by 6, so the solution of the equation is x = 2. Try to find out the value of a and solve the equation correctly

Xiaohua's error - 1 is not multiplied by 6. If we take Xiaohua's error free condition and get the result as 2, then - 1 should be - 1 / 6 and put it into the equation 2 * 2-1 / 3 = 2 + A / 3-1 / 6A = 11 / 2, then 2x-1 / 3 = x + 11 / 6-1x = 1 / 3 + 11 / 6-1x = (2 + 11-6) / 6 {note that Comrade Xiaohua must have made a mistake here and written x = (2 +...)

Solving the applied problems of mathematics in grade two of junior high school
The distance between a and B is 360km. After the opening of the newly built expressway, the average speed of long-distance vehicles in a and B will be increased by 50%, while the time from a to B will be shortened by 2H to find the original average speed
Can you give me a 2-yuan equation?

Let the original speed be XKM / h
360/x-2=360/[(1+50％）x]
The solution is x = 60
It is tested that x = 60 is the root of the original equation
The original average speed is 60km / h
Let the original speed be XKM / h and the increased speed be YKM / h
y=(1+50％)x
360/x-2=360/y
The solution is x = 60;
y=90
It is proved that x = 60 and y = 90 are the roots of the original equations
The original speed is 60km / h

Fifth grade mathematical thinking training questions?
30 answers
30 answers and questions

1. There are 40 students in a class, including 15 students in the mathematics group, 18 students in the model group, and 10 students in both groups. How many students do not take part in both groups? 2. 45 students in a class take part in the final examination. After the results are published, 10 students get full marks in mathematics, and 3 students get full marks in mathematics and Chinese

Simple calculation is required: (1) - 45 and 1 / 43 / (- 44), (2) 33300 / (- 37)

(1) - 45 and 1 / 43 / (- 44)
=（44+44/43）÷44
=44÷44+44/43÷44
=1+1/43
=1 and 1 / 43
（2）33300/（-37）
=900×37/（-37）
=-900

Fill in the blanks in the first day of junior high school
1. The largest non positive number is () and the largest negative number is (). 2. The sum of all integers less than 6 is () 3. There are () integers not less than - 7 and less than 7, their product is (), and their sum is ()

1. The question is 0 and none
2. How is it possible?
3. The product of 14 questions (6, 5, 4, 3, 2, 1, 0, - 1, - 2, - 3, - 4, - 5, - 6, - 7) is 0 and - 7
(my Junior 2)

Number 1 2 3 4 5 6 7 8... 1000 1001 1002
Count a thousand

main()
{ int i;
for(i=1;i

If x × 514 = y × 1415 = 1, then 5x-2y=______ (judge right or wrong)

Because x × 514 = y × 1415 = 1, so x = 145, y = 1514 when x = 145, y = 1514, 5x-2y = 5 × 145-2 × 1514 = 14-157 = 1167, so the answer is: 1167

Reading extracurricular books often can improve the level of knowledge and writing

Reading extracurricular books often can increase knowledge and improve writing level