ajarin nomer 3 dong 3 / 3+√2

jawabannya yg A. maaf ya kalo ada yg salah^^

3/(3+√2) x (3-√2)/(3-√2)
= 3(3-√2) / (3+√2)(3-√2)
=( 9 - 3√2) / 9-2
= (9-3√2)/7