A = 9, B = - 8, then the 2003 power of a + the 2004 power of B is

A = 9, B = - 8, then the 2003 power of a + the 2004 power of B is

Look at the mantissa 9 multiplied by 1 9, the mantissa is 1, and then multiplied by a 9 mantissa becomes 9, that is to say, the mantissa of 2n 9 multiplied by 1, 2n + 1 9 multiplied by 9 is 9, that is, the mantissa of 2003 9 multiplied by 9 is 9
If you look at the mantissa of 8 multiplication, there will be 4, 2, 6, 8, 4 loops. That is to say, every 4 mantissa of 8 multiplication is the same, that is, the mantissa of 2004 8 is equal to the mantissa of 4 8 multiplication, that is, 6 (- the 2004 power of 8 is positive)
That is 9 + 6 = 15
The mantissa is 5