Tolong bantu jawab kawan kawan

Tolong bantu jawab kawan kawan

Jawaban:

$frac{7}{5 + 2 sqrt{3} } times frac{5 - 2 sqrt{3} }{5 - 2 sqrt{3} }$

$= frac{7(5 - 2 sqrt{3}) }{25 - 12} \ = frac{35 - 14 sqrt{3} }{13}$

jawaban C

Jawaban:

$frac{7}{5 + 2 sqrt{3} } times frac{5 - 2 sqrt{3} }{5 - 2 sqrt{3} } \ = frac{35 - 14 sqrt{3} }{25 - 4(3)} \ = frac{35 - 14 sqrt{3} }{25 - 12} \ = frac{35 - 14 sqrt{3} }{13}$

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