Question

rezolva inecuatia:
0,7x-1,2la puterea a doua<sau=0,2x+3,06

Answer 1

0,7x - 1,2^2≤ 0,2x+3,06
0,7x - 0,2x ≤ 3,06 + 1,44
0,5x ≤ 4,5
x ≤ 9   deci x ={0,1,2,3,4,5,6,7,8,9}