Who knows the answer to the power of the 15th product and the multiplication of the integral (1)? Chapter 15

Who knows the answer to the power of the 15th product and the multiplication of the integral (1)? Chapter 15

15.1 multiplication of integers
1
1—5 CABCC
6—9 DCBC
2
1、y²-xy
2. (a-179; B-6) & 178; or a-179; (a-179; B-6, etc
3、4y²-21y+5
4、20m²-7m-6
5、4a²-2a+4
6、-14
7、a³+3a²-4a-12
3
-6x
4、 The result of simplification is 11, so it has nothing to do with the value of A
5、 X = 4 / 5
6、 Brief introduction
First question:
1. The following calculation error is ()
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