Mohon dijawab besok dikumpul Pake cara

(√3+√7)(√3-√7)/2√5+√2 =
√9+√21-√21-√49/2√5+√2=
3-7/2√5+√2= (-4/2√5+√2)×(2√5-√2/2√5-√2)
=-8√5+4√2/4√25-√4= 4√2-8√5/20-2
=4(√2-2√5)/18= 2/9(√2-2√5)