[中學] 請教幾何+因式分解
1.3X5X(4^2+1)(4^4+1)(4^6+1)=4^n-1
n=?
2.四邊形ABCD, AB=√6 , BC=5-√3 , CD=6 求AD=?
請各位數學高手幫忙解答....> <
感謝各位!!!
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