The following formulas are given: 32-12 = 8 = 8 × 1, 52-32 = 16 = 8 × 2, 72-52 = 24 = 8 × 3, 92-72 = 32 = 8 × 4 If you look at the above series of formulas, what rules can you find? Express this rule with algebraic formula

According to the analysis: (2n + 1) 2 - (2n-1) 2 = 8 × n

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1. 1 ^ 2 + 1 = 1 * 2 2 ^ + 2 = 2 * 3 3 ^ 2 + 3 = 3 * 4
2. The following formulas are given: 32-12 = 8 = 8 × 1, 52-32 = 16 = 8 × 2, 72-52 = 24 = 8 × 3, 92-72 = 32 = 8 × 4 If you look at the above series of formulas, what rules can you find? Express this rule with algebraic formula
3. A regular string of numbers: 1, - 2,3, - 4,5, - 6 What formula can be used to express each of his terms? (algebraic formula)?
4. Choose any one of 1.2.3.4.5.6.7.8.9, multiply by 9, and then multiply by 123456789. What's the rule
5. Given a = 5, find the value of the algebraic formula (A-4) / (a ^ 2-9) divided by 1 / (A-3) multiplied by (a ^ 2 + 2a-3) / (a ^ 2-8a + 16) Given a = 5, find the value of the algebraic formula (A-4) / (a ^ 2-9) divided by 1 / (A-3) multiplied by (a ^ 2 + 6A + 9) / (a ^ 2-8a + 16)
6. There is a group of numbers in regular order. 2.6.10.14. How to express the nth number in algebraic formula
7. 1 / 5 + 4 / (1 * 5) = 1,1 / 6 + 4 / (2 * 6) = 1 / 2,1 / 7 + 4 / (3 * 7) = 1 / 3,1 / 8 + 4 / (4 * 8) = 1 / 4
8. (2 + 1) (the square of 2 + 1) (4 of 2 + 1) (8 of 2 + 1) (16 of 2 + 1) (32 of 2 + 1) (64 of 2 + 1) + 1? fast
9. Find the value of: (5 + 1) (the square of 5 + 1) (the square of 5 + 1) (the square of 5 + 1) (the octagon of 5 + 1)
10. (1 + 2 / 1) (square of 1 + 2 / 1) (square of 1 + 2 / 1) (octagonal of 1 + 2 / 1) + pentagonal of 2 / 1 +? Wrong. At the end of the list is + 2's 15 / 1 =?
11. A group of migrant workers participate in the excavation and transportation of soil at the construction site. On average, each of them digs 5 cubic meters or transports 3 cubic meters of soil every day. If 24 people are arranged to dig and transport soil, they should be arranged______ Only when people transport the soil can the excavated soil be carried away in time
12. A group of migrant workers participate in the excavation and transportation of soil at the construction site. On average, each of them digs 5 cubic meters or transports 3 cubic meters of soil every day. If 24 people are arranged to dig and transport soil, they should be arranged______ Only when people transport the soil can the excavated soil be carried away in time
13. A group of migrant workers participate in the excavation and transportation of soil for water conservancy projects. On average, each person digs 5 cubic meters or transports 3 cubic meters of soil every day. If 24 people are arranged to dig and transport soil, it is necessary to A group of migrant workers participate in the excavation and transportation of soil in water conservancy projects. On average, each person digs 5 cubic meters of soil or transports 3 cubic meters of soil every day. If 24 people are arranged to dig and transport soil, they should be arranged____ People dig____ When people transport soil, the excavated soil will be transported away in time Countable system of linear equations of two variables Understand it completely
14. When a farm is building water conservancy, 48 people are sent to complete the work of digging and transporting soil. If each person digs 5 cubic meters of soil or transports 3 cubic meters of soil on average every day, how to allocate the number of people to dig and transport soil so that the excavated soil can be transported away in time?
15. When a farm is building water conservancy, 48 people are sent to complete the work of digging and transporting soil. If each person digs 5 cubic meters of soil or transports 3 cubic meters of soil on average every day, how to allocate the number of people to dig and transport soil so that the excavated soil can be transported away in time?
16. When a farm is building water conservancy, 48 people are sent to complete the work of digging and transporting soil. If each person digs 5 cubic meters of soil or transports 3 cubic meters of soil on average every day, how to allocate the number of people to dig and transport soil so that the excavated soil can be transported away in time?
17. Senior high school mathematics compulsory 5 chapter 3 inequality review reference questions answers
18. Bo is the middle line on the hypotenuse of right triangle ABC, extend Bo to point D, make Bo = do, connect ad CD, prove that quadrilateral ABCD is a rectangle
19. Given the parallelepiped abcd-a'b'c'd '. Find the vector AC' + the vector d'b-the vector DC
20. Give examples of using neutralization reaction in life