tolong yg bisa bantu no 8 dan 10

akar3+4 / 3+akar2 dikalikan 3-akar2 / 3-akar 2
=3akar3-akar6 + 12-4akar2 / 9-2
=3 akar3 - akar6 + 12 - 4akar2/7
log5=a,log3=b
^5log9=log 9/log5
=log 3^2 / log5
=2xlog3/log5
=2b/a