How many times how many times how many is equal to how many plus how many plus how many. These six numbers are required to be the same number
0 times 0 times 0 equals 0 plus 0 plus 0
Compare the size; - 2 / 1a and - 3 / 1a
There are three cases
a> 0, the latter is larger
a
(1a-1 / 4) times (1a + 1 / 4)
(1a-1 / 4) times (1a + 1 / 4) = 1 / 16 * a ^ 2-1
RELATED INFORMATIONS
- 1. What's 1 times 2 / 1 + 2 times 3 / 1. + 99 times 100 / 1? Note that 1 times 2 is the denominator~
- 2. A is a number that is not equal to 0. Please explain which of a + 3 / 5 and a multiplied by 3 / 5 has the larger result
- 3. If a and one-half B are opposite to each other, and B is not equal to 0, then the reciprocal of a is 2 c-2b D-B of A2B
- 4. If a number is multiplied by a true fraction, the product must be larger than that number______ (judge right or wrong)
- 5. A true fraction multiplied by a number must be smaller than that number
- 6. In the triangle ABC, we know that a = 18. B = 22. Angle a = 45 degrees, then the number of such triangles is?
- 7. If a, B, C are the three sides of triangle ABC, and a (a-b) + B (B-C) + C (C-A) = 0, try to judge the shape of triangle ABC and explain the reason
- 8. As shown in the figure, in RT △ ABC, ∠ BAC = 90 °, ab = AC, and points m and N are on edge BC. (1) as shown in Figure 1, if am = an, prove: BM = CN; (2) as shown in Figure 2, if M and n are any two points on edge BC, and satisfy ∠ man = 45 °, then are line segments BM, Mn and NC possible to make equation Mn2 = BM2 + NC2 stand? If yes, please prove; if not, please give reasons
- 9. High school a basic inequality problem! Given that x + 2Y = 1, both X and y are greater than 0, find the minimum value of 1 / x + 1 / y Because 1 / x + 1 / Y "2 √ (1 / XY) If and only if 1 / x = 1 / y is obtained, then x = y Substitute x + 2Y = 1 to get x = y = 1 / 3 So the minimum value is 2 / 3
- 10. Some basic inequalities in Senior High School 1. For any x > 0, X / (the square of X + 3x + 1) ≤ a, then the value range of a is? 2. Let a > b > 0, then the minimum value of the square of a + 1 / AB + 1 / a (a-b) is?
- 11. How much is four quarters minus one sixth? How much is three quarters plus three tenths?
- 12. Given that the product of a's Square plus BC is 14, the product of B's Square minus 2 times BC is - 6, find the product of 3 times a's Square plus 4 times b minus 5 times BC
- 13. 0 × (- M) = (), m × 0 = () (- 1 / 3) × 3 / 7 = (), (- 3 / 16) × (- 16 / 9) = () (- 5) × (1 + 1 / 5) = (), X · 1 / x = () (x ≠ 0) 7 of 8 × (- 3 of 10) × 0 × (17 of 19) = () A > 0, B < 0, then AB 0 (greater or less than)
- 14. M and N are reciprocal. The sum of the product of M and N and X is 25 / 7. What is x?
- 15. A number plus 52.2 times 52 plus itself minus 2.5% of 400 is exactly 2740. What's the number
- 16. It is known that a * b = 380, if a is expanded to 3 times of the original, then the product is (); if B is reduced to 1 / 2 of the original, then the product is ()( It is known that a * b = 380, if a is expanded to 3 times of the original, then the product is (); if B is reduced to 1 / 2 of the original, then the product is ()(
- 17. The product of a number (except 0) multiplied by a true fraction () is a number. A. greater than. B. less than. C. equal to. Speed
- 18. When two numbers are multiplied, one factor is expanded by 8 times and the other factor is reduced by half, and the product is 360, then the original product is 360________ . (with explanation)
- 19. The product of the two factors is 3.45. If one factor is expanded by eight times and the other factor is reduced by one third, what is the product now?
- 20. When two numbers are multiplied, one factor is reduced by 10 times, and the other factor is increased by 20 times. Their product is the original______ Times