Question

3.Rationalizeaza numitorul,scotand mai intai factori sub radical si apoi simplificati    acolo unde este posibil.
a)2supraaa√8;b-10supra√15;c)-9supra√18;d)5√7supra2√20;e)-6√5spra5√24;f)7√3supra√35;g)-44suuuuuuuuupr5√√12;hhhhh)√3--√5supra2√√8;i)8√3supra√32;j)2-√5supra3√6;k)-9√7supra√63;l)6√11ssssssupraa√18;m)-5√18spaaaaaaaaaa3√96;n)asupra√a;a.0

Answer 1

a)2/√8 =2√8/8=4√2/8=√2/2
b) 10/√15=10√15/15=2√15/3
c)-9/√18=-9√18/18=-√18/2=3√2/3
d)5√7/2√20 = 5√140/40=10√35/40=√35/4
e)-6√5/5√24 = -6√120/120=-12√30/120=-√30/10
;f)7√3 /√35 = 7√105/35 =√35/5
g)-44/5√12 = -44√60/12 =-88√15/12=-22√15/3
h)√3-√5/2√8 =3-√40/16=3-2√10/16=3-√10/8
i)8√3 /√32 = 8√96/32=32√6/32=√6
j)2-√5 /3√6 = 2 -√30/18
k)-9√7 /√63 = -9√441/63 =-√441/7 =-21/7=3
l)6√11/√18 = 6√198/18 =18√33/18=√33
m)-5√18/3√96 = -5√1728/288=-5x24√3/12√2=10√3/√2=10√6/2=5√6
n)a/√a = a√a/a=√a