(4 akar 7 + 3 akar 2)(4 akar 3 - akar 2) = tolong bantu...

(4√7 + 3√2)(4√3 - √2)
= (4×4)√(7×3) - 4√(7×2) + (4×3)√(2×3) - 3(√2×2)
= 16√21 - 4√14 + 12√6 - 3(2)
= 16√21 - 4√14 + 12√6 - 6