√320=√5X64=8√5
√75X√6/3X√2
=√(25X3)X√12 /3
=5√3X2√3/3
=10
√5a*√1/5ay
=√a²y
=lal√y
√9a²b³c的4次方
=3lalbc²√b
√b/a ÷√4ab
=√b/a÷2√ab
=2√1/a²
=2/lal
√(-4a)x√(-9b)
=2√(-a)x3√(-b)
=6√ab
如果本题有什么不明白可以追问,如果满意请点击“好评”
√320=√5X64=8√5
√75X√6/3X√2
=√(25X3)X√12 /3
=5√3X2√3/3
=10
√5a*√1/5ay
=√a²y
=lal√y
√9a²b³c的4次方
=3lalbc²√b
√b/a ÷√4ab
=√b/a÷2√ab
=2√1/a²
=2/lal
√(-4a)x√(-9b)
=2√(-a)x3√(-b)
=6√ab
如果本题有什么不明白可以追问,如果满意请点击“好评”