计算(√5-√3+√2)(√5+√3-√2)

2024-12-23 09:10:42
推荐回答(3个)
回答1:

(√5-√3+√2)(√5+√3-√2)
=[√5-(√3-√2)][√5+(√3-√2)]
=(√5)²-(√3-√2)²
=5-(5-2√6)
=2√6

回答2:

(√5-√3+√2)(√5+√3-√2)
=(√5-√3)(√5+√3)-(√5-√3)√2+(√5+√3)√2-2
=5-3+2√6-2
=2√6

回答3:

(a-b+c)(a+b-c)=[a-(b-c)][a+(b-c)]=a^2-(b-c)^2=a^2-(b^2+c^2-2bc)=2*根号6吧