(1)原式= (
9
4 )
1
2 -1-(
27
8 ) -
2
3 +(
3
2 ) -2
=
3
2 -1-(
3
2 ) -2 +(
3
2 ) -2
=
1
2
(2)原式=2lg5+2lg2+lg5•(1+lg2)+lg2 2
=2(lg5+lg2)+lg5+lg2(lg5+lg2)
=2+lg5+lg2
=3
(1)原式= (
9
4 )
1
2 -1-(
27
8 ) -
2
3 +(
3
2 ) -2
=
3
2 -1-(
3
2 ) -2 +(
3
2 ) -2
=
1
2
(2)原式=2lg5+2lg2+lg5•(1+lg2)+lg2 2
=2(lg5+lg2)+lg5+lg2(lg5+lg2)
=2+lg5+lg2
=3