(3√7+2倍√3)(2√3-3倍√7);(√32-3倍√3)(4√2+√27);要过程!(3√6-√4)²;(1+√2-√3)(1-√2+√3)要过程!

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/07 04:43:00

(3√7+2倍√3)(2√3-3倍√7);(√32-3倍√3)(4√2+√27);要过程!(3√6-√4)²;(1+√2-√3)(1-√2+√3)要过程!
(3√7+2倍√3)(2√3-3倍√7);(√32-3倍√3)(4√2+√27);要过程!
(3√6-√4)²;(1+√2-√3)(1-√2+√3)要过程!

(3√7+2倍√3)(2√3-3倍√7);(√32-3倍√3)(4√2+√27);要过程!(3√6-√4)²;(1+√2-√3)(1-√2+√3)要过程!
(3√7+2√3)(2√3-3√7)
=(2√3+3√7)(2√3-3√7)
=(2√3)^2-(3√7)^2
=12-63
=-51
(√32-3√3)(4√2+√27)
=(4√2-3√3)(4√2+3√3)
=(4√2)^2-(3√3)^2
=32-27
=5
(3√6-√4)^2
=(3√6)^2-2*3√6*√4+(√4)^2
=54-(6√24)+4
=58-12√6
(1+√2-√3)(1-√2+√3)
=[1+(√2-√3)][1-(√2-√3)]
=1^2-(√2-√3)^2
1-[(√2)^2-2((√2)(√3)+(√3)^2]
=1-[2-(2√6)+3]
=2√6-4