Răspuns :
1.
2⁻¹=1/2
2⁻²=1/2²=1/4
1/2+1/4=75/100=3/4
2/4+1/4=?3/4
3/4=3/4(A)
2.
x-3≠0=>x≠3
=>x∈R-{3}
4.
900lei______________100%
1008lei_____________p
p=100800/900=112%
6.
B(4,6)
2⁻¹=1/2
2⁻²=1/2²=1/4
1/2+1/4=75/100=3/4
2/4+1/4=?3/4
3/4=3/4(A)
2.
x-3≠0=>x≠3
=>x∈R-{3}
4.
900lei______________100%
1008lei_____________p
p=100800/900=112%
6.
B(4,6)