Current location - Training Enrollment Network - Mathematics courses - 20 1 1 Choose to fill in the blanks in the Shaanxi Mathematics (Science) Volume of the College Entrance Examination! Urgent need!
20 1 1 Choose to fill in the blanks in the Shaanxi Mathematics (Science) Volume of the College Entrance Examination! Urgent need!
1 1. 1
12.3 or 4
13.n+(n+1)+(n+2)+(3n-2) = the square of (2n-1).
14.2000
15. Negative infinity to -3U3 to positive infinity