Look at the following three lines: - 2, 4, - 8, 16, - 32, 64 & nbsp ①0，6，-6，18，-30，66… ②-1，2，-4，8，-16，32… ③ (1) what is the order of the number of the first row? (2) What is the relationship between the number of rows 2 and 3 and the number of rows 1? (3) Take the tenth number of each row and calculate the sum of the three numbers

Look at the following three lines: - 2, 4, - 8, 16, - 32, 64 & nbsp ①0，6，-6，18，-30，66… ②-1，2，-4，8，-16，32… ③ (1) what is the order of the number of the first row? (2) What is the relationship between the number of rows 2 and 3 and the number of rows 1? (3) Take the tenth number of each row and calculate the sum of the three numbers

(1) (- 2) n; (2) the relationship between the number of the second line and the number of the first line is: the number of the second line is 2 larger than the number corresponding to the first line; the number of the third line is 12 times of the number corresponding to the first line; (3) the tenth number of the first line is 1024; the tenth number of the second line is 1026; the tenth number of the third line is 512; 1024 + 1026 + 512 = 2562

Regularly arrange the number of lines: - 2,4, - 8,16, - 32,64 The nth number in this row is_____ .

[（-1）^n]×2^n

Given that a and B are rational numbers, if the value of the formula (AX & # 178; + 2bx-y + 1) - (2x & # 178; - 4x + 10y-2 / 3) has nothing to do with the value of X, try to find the value of a and B
How did (A-2) x get it
(2B + 4) x
-What about 11y
I suddenly understood

Yes, first remove the brackets, then merge the similar items, and treat a and B as constants
(ax²+2bx-y+1)-(2x²-4x+10y-2/3)
=ax²+2bx-y+1-2x²+4x-10y+2/3
=（a-2）x²+（2b+4)x-11y+5/3
The value is independent of the value of X,
Then A-2 = 0
2b+4=0
A = 2
b=-2