Sederhanakanlah :

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A. 2√2 (2√20 + √12)

B. 2
√5

C. 4
2 – √3

D. √8 – √5
√8 + √5

Sederhanakanlah :

Jawaban Terkonfirmasi

A.) 2√2 (2√20 + √12)
=> 2√2 (2√(4 x 5) + √(4 x 3)
=> 2√2 (4√5 + 2√3)
=> 8√10 + 4√6.
b.) frac{2}{sqrt{5}}
=> frac{2}{sqrt{5}}(frac{sqrt{5}}{sqrt{5}})
=> frac{2sqrt{5}}{5}
c.) frac{4}{2-sqrt{3}}
=> frac{4}{2-sqrt{3}}(frac{2+sqrt{3}}{2+sqrt{3}})
=> frac{4(2+sqrt{3})}{4-3}
=> 8 + 4√3
d.) frac{sqrt{8}-sqrt{5}}{sqrt{8}+sqrt{5}}
=> frac{sqrt{8}-sqrt{5}}{sqrt{8}+sqrt{5}}(frac{sqrt{8}-sqrt{5}}{sqrt{8}-sqrt{5}})
=> frac{8+5-2sqrt{40}}{8-5}
=> frac{13-4sqrt{10}}{3}