问题标题:
根号24×根号216/根号6+5=64x³+729=0求x的值(根号2-2根号3)²=
问题描述:
根号24×根号216/根号6+5=
64x³+729=0求x的值
(根号2-2根号3)²=
谷春华回答:
√24×√216/√6+5
=2√6×6√6/√6+5
=12√6+5
64x³+729=0
(4x)³=-729
(4x)³=(-9)³
4x=-9
x=-9/4
(根号2-2根号3)²
=2-2√2*2√3+12
=14-4√6
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