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AB two times the product of the number, is it 2Ab or AB2 or AB 2 square! Please master answer!
Two times the product of AB is 2Ab
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- 1. What are the times and items of the polynomial AB2 + 25 in Grade 7 (AB2 is actually the 2nd power of AB, and 25 is the 5th power of 2)
- 2. AC = (AB2 power + BC2 power) 1 / 2 = 5, ab = 3 m, BC = 4 m How to calculate? Can you write the calculation process
- 3. Given AB = 7, a + B = 6, then the value of polynomial A2B + AB2 is______ ．
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- 8. According to the law of conservation of mass: in A2 + B2 = = = 2c, the chemical formula of "C" can be expressed as----
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- 10. About the definition of sulfuric acid,
- 11. 2 (A2 + AB2) - 2 (a2b-1) - 2ab2-2, branch
- 12. In the reaction A2 + 2ab2 = 4AB, 1g & nbsp; A2 reacts with enough AB2 to produce 5g AB, then the ratio of molecular weight of A2 to AB2 is () A. 3：4B. 4：3C. 1：2D. 2：1
- 13. Let a and B belong to R. compare the relationship between a square + b square + 1 and ab + A + B
- 14. If a > 1, - 1
- 15. Known a
- 16. a> 1, b > 1, and a ≠ B, then the relationship between a and 178; B + AB and 178; and a and 178; + B and 178; is positive
- 17. We know Ab0, and a + B
- 18. Inquiry learning: known a < 0, - 1 < B < 0, try to compare the size of a, AB, AB2
- 19. a>1,-1
- 20. It is known that elements a and B can form AB2 and A2B It is known that elements a and B can form AB2 and A2B. The relative molecular mass of AB2 is 46 and that of A2B is 44. The relative atomic mass of a and B is calculated