1、C
2、D
3、C
4.B( 1 and 64)
5、C
6. A.
fill-in-the-blank question
7、 3、-3、 √3
8、-2
9,49 (2a-3+5-a = 0, a=-2, square root of x = 7, x=49)
10、 8
Computational problem
(1) Original formula = 8+0- 1/4 = 3 1/4.
(2) The original formula = (√ 2-1)+(√ 3-√ 2)+(2-√ 3) = 2-1=1.
Please ask questions that require a detailed process.