Bantu no 4, makasih, jika AC = x dan AB = 2. Tentukan panjang BD !

BC = akar [AC^2 - AB^2]
= akar [x^2 - 2^2]
= akar [x^2 - 4]
= akar [(x - 2)(x + 2)]

L1 = 1/2 × AC × BD atau
L2 = 1/2 × AB × BC

L1 = L2
1/2 × AC × BD = 1/2 × AB × BC
AC × BD = AB × BC
BD = AB × BC
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AC
BD = 2 akar [(x - 2)(x + 2)]
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x