(Akar 32+3 akar 3)(akar18-2akar3)

(√32 + 3√3) (√18 - 2√3)
= √576 - 2√96 + 3√54 - 6√9
= 24 - 2√6x16 + 3√9x6 - 6x3
= 24 - 2x4√6 + 3x3√6 - 18
= 6 - 8√6 + 9√6
= 6 + √6