Current location - Training Enrollment Network - Mathematics courses - Question 1: Calculation: 2 minus 2 squared minus 2 cubic has been changed to 2 19 power plus 2 to 20 power. What is the answer?
Question 1: Calculation: 2 minus 2 squared minus 2 cubic has been changed to 2 19 power plus 2 to 20 power. What is the answer?
Question1:2-22-23 ...-219+220 = 2-22 (1-218)/(1-2)+220.

Question 2: (2-6+7)*8=24

The third question: 1. 0.80*3=2.40 yuan 2. One envelope has four answers, and the other has five answers. Amount 6.4 yuan.