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On the number axis, the number on the left is negative and the number on the right is positive The center is 0
Strictly speaking, this sentence is wrong. The second and third sentences are wrong. It should be said that the left side of the origin is a negative number, and the right side of the origin is a positive number
How to express that a is positive and negative
Positive number a > 0
Negative a
What do positive and negative numbers mean
Quantity in the opposite sense;
For example:
Income is positive, expenditure is negative; temperature above 0 ℃ is positive, below 0 ℃ is negative; above sea level is positive, below 0 ℃ is negative
Can any number be divided into positive and negative numbers? The package does not include the root 2
Real numbers are OK
Root 2 is also a positive number
But I will learn the imaginary number corresponding to the real number in the future
RELATED INFORMATIONS
- 1. What are positive numbers and negative numbers
- 2. What does a positive minus a negative equal to
- 3. How much is 0 minus negative or positive, such as 0-60 -- 6?
- 4. Given any positive real number, an algorithm is designed to find the area of the circle with this number as radius
- 5. If the opposite of a number is a non positive number, then the number must be () A. Negative B. positive C. 0 or positive D. 0
- 6. If the opposite number of a number is non positive, then the number must be: A, positive B, non positive C, non negative D, negative
- 7. When a is what kind of real number, the following formula has meaning in the range of real number: (1) a + 2 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; (2) 3 − a
- 8. If a and B are real numbers and 1 / A-1 / b = 1 / (a + b), then the values of B / A-A / b are? A, - 1 B, 0 C, 1 / 2 D, 1 A、-1 B、0 C、1/2 D、1
- 9. If the three sides of △ ABC satisfy a2-2bc = c2-2ab, then △ ABC is () A. Isosceles triangle B. right triangle C. equilateral triangle D. acute triangle
- 10. It is known that a, B and C are the three sides of △ ABC, and the value of a, B and C is such that the value of fraction (AB AC + the square BC of C) A-B is 0. Judge the shape of the triangle and explain the reason
- 11. On the number axis, the number on the left must be negative, and the number on the right must be positive? Or do you want to decide which side is the positive direction and which side is the positive number?
- 12. Is 0 the dividing point between positive and negative numbers? There is a question that says 0 is the dividing point between positive and negative numbers, right?
- 13. In the same problem, the quantities expressed by positive numbers and negative numbers have the following properties______ The meaning of the book
- 14. In the same problem, the quantities expressed by positive numbers and negative numbers have the following properties______ The meaning of the book
- 15. Why can't we simply understand the concepts of positive and negative numbers as follows: the number with "+" is positive, and the number with "-" is negative
- 16. X ^ 2 + 1 / X and (x + 1) ^ 2 / 1
- 17. General score: (2-x) ^ 2 / 1 and x ^ 2-4 / X
- 18. The following formulas are divided into: (1) 1 / A, 3 / 4A & sup2; B, 1 / 6ab & sup2; C; (2) 1 / 2x-2,1 / (x-1) & sup2;
- 19. (A & sup2; - B & sup2;) + (3a-3b) how many factorizations are there~
- 20. Using factorization to calculate 1,1.4 & sup2; × 9-2.3 & sup2; × 362,52 & sup2; + 48 & sup2; + 52 × 96