根号2(根号8+4根号2分之1-根号12)
问题描述:
根号2(根号8+4根号2分之1-根号12)
答
原式=√2(√8+4√(1/2)-√12)
=√2(2√2+2√2-2√3)
=√2(4√2-2√3)
=8-2√6
谢谢。。。的说
答
=√2×8+4√(2×1/2)-√2×12
=√16+4-√24
=4+4-2√6
=8-2√6