1 + 2 + 4 + 8 + 16 + 32 +... + 1024,

1 + 2 + 4 + 8 + 16 + 32 +... + 1024,

1+2+4+8+16+32+128+256+512+1024
=2047-64
=1983

When a = 13, B = 8, find the values of the following polynomials and answer the following questions
(1) The square of a-2ab + the square of B (2) (a-b)
Answer the following questions
《1》 What do you find by observing the results of (1) (2)
《2》 When a = 6 and B = - 3, is the law still true?
《3》 Choose another set of a, b values to try
《4》 Can you try to calculate the square of polynomial a-2ab = the square of B when a = 1.732 and B = 0.732 with a simple method?

（1）25；（2）25
《1》 The results are the same
《2》 9 = 9, the results are still the same
《3》 A = 6, B = 2; 64 = 64, still the same
《4》 Polynomial a ^ 2-2ab + B ^ 2 = (a-b) ^ 2 = (1.732-0.732) ^ 2 = 1 ^ 2 = 1

If the polynomial (- A-1) x ^ 5-1 / 3x ^ B + X-1 is a quartic polynomial about X, then the value of AB is?

The problem requires a quartic polynomial of X, then x ^ 5 should not exist, that is, the coefficient is 0, so - A-1 = 0, get a = - 1
Only - 1 / 3x ^ B and X are left with X, so B = 4
ab=-4