(根号48+根号18)(2-2根号三)-((根号3-根号2)的平方)急

问题描述:

(根号48+根号18)(2-2根号三)-((根号3-根号2)的平方)

答:
(根号48+根号18)(2-2根号三)-((根号3-根号2)的平方)
=(√48+√18)(2-2√3)-(√3-√2)^2
=(4√3+3√2)(2-2√3)-(√3-√2)^2
=8√3-24+6√2-6√6-(3-2√6+2)
=8√3-29+6√2-4√6

原式=(4√3+3√2)(2-2√3)-(√3-√2)²
=8√3+6√2-24-6√6-(3+2-2√6)
=8√3+6√2-6√6-24-5+2√6
=8√3+6√2-4√6-29

﹙√48+√18﹚﹙2-2√3﹚-﹙√3-√2﹚²
=﹙4√3+3√2﹚﹙2-√3﹚-﹙5-2√6﹚
=8√3-12+6√2-3√6-5+2√6
=8√3+6√2-√6-17.

-16.45627114

=(4√3+3√2)(2-2√3)-(√3-√2)²
=8√3-24+6√2-6√6-(3-2√6+2)
=8√3-24+6√2-6√6-5+2√6
=8√3-29+6√2-4√6