How to understand binomial expansion formula?

How do you understand the formula of the formula? Answer: (a + b) how to understand the formula of the formula? Answer: (A: (a + b) \\\\\\\\\\\\: (a + b) \\\8319; (8319; = C (n, 0) a (n, 0) a (n (n, 0) a) \\\\\\\\\\\\\\\\\\\\\\\\\\\; & 1471; & 185; B + [n (n -...)

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1. To find the constant term in the expansion of binomial (x + Z / X-2), the general term formula method is used, Yes (x + 1 / X-2)
2. How to find the constant term in binomial expansion
3. How to find the constant term of binomial? As shown in the picture, thank you! I don't understand. What's the principle? Explain it. The formula is too messy
4. What is the meaning of constant term in binomial I'd like to give you an example. Thank you
5. How to find the constant term of binomial
6. The constant term in the expansion of binomial (x3 − 1x2) 5 is______ ．
7. 24 plus 4 is 28. Is 28 odd or even
8. How do three odd numbers add up to an even number**********
9. The distance between port a and port B is 1200km. Ship a sails from port a to port B at 60km per hour. After 30 minutes of departure, ship B sails from port B to port a at 70km per hour. The two ships meet a few hours after departure
10. On the inequality of X, the solution set of root x > ax + 1.5 is {x | 4
11. Who can prove the general term formula of binomial?
12. What does r represent in the general formula of binomial? What does the R of TR + 1 stand for?
13. How to find the sum of coefficients of binomial expansion
14. What is the difference between the coefficients in the expansion and the binomial coefficients
15. Find the term with the largest binomial coefficient in the expansion of (x + 2Y) 9 power Need a complete process!
16. The sum of coefficients in the expansion of binomial (x-2y) ^ n is
17. If the largest binomial coefficient of (x-2y) n expansion is the fifth term, then the sum of binomial coefficients of all terms of the expansion is___ ．
18. If the sum of the binomial coefficients of the (x2 − 1x) n expansion is 32, then the coefficient of the term with X4 in the expansion is () A. 10B. -10C. -5D. 5
19. If the coefficient of (x2-3x + 4) (x2-ax + 1) is - 1, then the value of a is______ ．
20. The constant term in (1 + x) 10 (1 + 1x) 10 expansion is () A. 1B. （C 110）2C. C120D. C1020