21)a=[3, 6-2,9:(3,1+2,7)]x2,7=(3,6-2,9:5,8)x2,7=(3,6-0,5)x2,7=3,1x2,7=8,37
B=0,7x(2,1x2:3,5+5,6)-0,004=0,7x(4,2:3,5+5,6)-0,004=0,7x(1,2+5,6)-0,004=0,7x6, 8-0,004=4,76-0,004=4,756
C={9x[0,5+0,2x(3,5+1,5)]+8}x6=[9x(0,5+0,2x5) +8]x6=[9x(0,5+1)+8]x6=(9x1,5+8)x6=(13, 5+8)x6=21,5x6=129
Crescător ;b, a, c
22) il fac la întrebarea cealaltă postata
