根号内(24乘以27)
问题描述:
根号内(24乘以27)
答
√(24 × 27)
= √(3 × 8 × 3 × 9)
= √(3 ² × 3 ² × 2 ² × 2)
= 3 × 3 × 2√2
= 9 × 2√2
= 18√2