根号2减根号18加根号8等于多少

2024-12-05 01:42:18
推荐回答(3个)
回答1:

合并(同类根式):(1-3+2)*根号2=0

回答2:

√2-√18+√8
=√2-√(9×2)+√(4×2)
=√2-√9×√2+√4×√2
=√2-3√2+2√2
=0

回答3:

√2-√18﹢√8=√2-3√2+2√2=0