2倍的根号2加根号48乘根号18减4倍的根号3

2025-02-27 14:27:34
推荐回答(2个)
回答1:

2倍的根号2加12倍的根号6减4倍的根号3

回答2:

2√2+√48×√18-4√3
=2√2+4√3×3√2-4√3
=2√2+12√6-4√3

(2√2+√48)×(√18-4√3)
=(2√2+4√3)×(3√2-4√3)
=(3√2+4√3-√2)×(3√2-4√3)
=(3√2+4√3)×(3√2-4√3)-√2(3√2-4√3)
=18-48-6+4√6
=-36+4√6

=(3√2+4√3)×(3√2-4√3)
=(3√2)²-(4√3)²
=18-48
=-30