初二數學題:計算:6/(3根號下2-2根號下3)的平方的結果爲( )
題目:
初二數學題:計算:6/(3根號下2-2根號下3)的平方的結果爲( )
解答:
6/(3√2-2√3)²
=6/(18-12√6+12)
=6/(30-12√6)
=1/(5-√12)
=(5+√12)/[(5-√12)(5+√12)]
=(5+√12)/(25-12)
=(5+√12)/13
題目:
初二數學題:計算:6/(3根號下2-2根號下3)的平方的結果爲( )
解答:
6/(3√2-2√3)²
=6/(18-12√6+12)
=6/(30-12√6)
=1/(5-√12)
=(5+√12)/[(5-√12)(5+√12)]
=(5+√12)/(25-12)
=(5+√12)/13
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