Square of (1 + x) + X (1 + x) + X (1 + x) + +What is the sum of the coefficients of all binomial expansions of X (1 + x)
You didn't write it clearly
The coefficient of binomial, just let x = 1
(1+1)+(1+1)+(1+1)^2+… +(1+1)^n
=2+2+2^2+2^3+.2^n
=2+2+2^2+2^3+.2^n
=2+(1-2^n)/(1-2)
=2^n+1
RELATED INFORMATIONS
- 1. The 208th power of minus two plus the 207th power of minus two is equal to?
- 2. What is the 207th power of 0.125 times the 208th power of negative 8
- 3. The 50th power of negative 2 multiplied by the 25th power of negative zero 25 is equal to? Simple method, thank you
- 4. A. the absolute value of an integer is a positive number B. the absolute value of a negative number is a negative number C. The absolute value of any number will not be less than 0 The absolute value of any integer is a natural number
- 5. A. The absolute value of any rational number is a positive number B. the absolute value of any rational number is not a negative number C. The absolute values of two opposite numbers are equal D. nine are away from the origin
- 6. If a is a rational number, then | a | must () A. It's a positive number B. It's not a positive number C. It's a negative number D. It's not a negative number
- 7. If the sum of two rational numbers is negative, then the two numbers are positive and negative. Is the absolute value of negative large?
- 8. The absolute value of the number 5 is 5, which is itself; the absolute value of the number - 5 is 5, which is its opposite number; the above comes from the theorem that the absolute value of a non negative number equals itself, and the absolute value of a non positive number equals its opposite number______ The absolute value of negative number - B is______ The absolute value of negative number 1 + A is______ The absolute value of positive number - A + 1______ .
- 9. The absolute value of a positive number is an integer, and the absolute value of a negative number is also a positive number. Is that right?
- 10. Comparing two negative numbers, the one with larger absolute value () and the one with smaller absolute value ()
- 11. What is the sum of binomial coefficients?
- 12. In the sixth power of (a + 2b-3c), find: (1) the coefficient of AB squared C cubic and (2) the sum of all the coefficients with a cubic term Thank you very much~
- 13. In (a + b) 10 expansion, the term with the largest binomial coefficient is (?)
- 14. Let the sum of binomial coefficients in the expansion of (a-b) n be 256, then the term with the smallest coefficient in the binomial expansion is () A. Item 5 B. items 4 and 5 C. items 5 and 6 D. items 4 and 6
- 15. 1. In the expansion of (5a + 7b) n, the sum of the binomial coefficients of each term is equal to 128, then N 2, find the term with the smallest coefficient in the expansion of (a-b) 10 3. The sum of coefficients of each item in the expansion of (a + b) n is 256. Write the binomial coefficients of the expansion in order 4. Find the sum of coefficients of all terms of the expansion of (a-3b) 6 There should be a process. Thank you
- 16. (a + b) ^ n if the binomial coefficients of the tenth and eleventh terms are the largest, what is n? How to calculate the required process
- 17. The coefficient of the monomial a ^ 2B / 7 is 1 / 7, and the degree is 3,
- 18. Is a × 2B × 3C a polynomial or a monomial? What is the coefficient? What is the degree?
- 19. 4AB ^ 2-5-3a ^ 2b is the expression of several times and several terms, and the cubic term is 7x ^ 2-5x ^ 3 + 3x-1 are several times and several terms
- 20. The correct answer to (1 / 3A + 1 / 2b) (1 / 3a-1 / 2b)? Please explain the reason for each step and the whole process (the most important step is to apply the formula)