根号二乘以2倍根号2等于多少?3倍根号2乘以3倍根号2等于多少.

2025-12-14 07:29:04
推荐回答(1个)
回答1:

√2×2√2=2×(√2)^2=2×2=4
3√2×3√2=(3√2)^2=3^2×(√2)^2=9×2=18