(6 akar 3 - 2 akar 2) (6 akar 3 + 2 akar 2 ) = ....???

(6√3-2√2)(6√3+2√2)
= (6√3.6√3)+(6√3.2√2)-(2√2.6√3)-(2√2.2√2)
= 36.3+12√6-12√6-4.2
= 108-8
= 100
* tanda titik = kali
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