Question

вычислите 2^3•2^-2+2^-3•2^2+1,25

Answer 1

2^3*2^-2+2^-3*2^2+1,25=
2^3/2^2 + 2^2/2^3 +1,25 = 8/4 + 4/8 +1,25 = 16+4/8 +1,25 = 20/8 +1,25 = 5/2 + 5/4 = 10+5/4=
15/4

Answer 2

2^3•2^-2+2^-3•2^2+1,25=8*1/4+1/8*4+1,25=2+0,5+1,25=3,75