计算 根号24乘(负根号三分之二+三倍根号六分之五+根号5)

√24 × ( - √(2/3) + 3√(5/6) + √5)
= 2√6 × ( -√6/3 + (3√30)/6 + √5)
= (-2√6√6)/3 + (2√6√30)/2 + 2√6√5
= (-2×6)/3 + 2√30 + 2√30
= 4(√30-1)