(√3+√7)²=..... Sederhanakanlah 2. (2√10-√8)²

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No 1
(√3 + √7)(√3+√7)
= 3 + √21 + √21 + 7
= 10 + 2√21

No 2
(2√10-√8)(2√10-√8)
= 4(10) - 2√80 -2√80 + 8
= 40 + 8 - 4√80
= 48 - 4√80