√36 × √144 =
√9 × √ = 21
√ ÷√25 = 2
∛64 × ∛ = 40
∛27 × ∛-8 =
∛125 ÷ ∛ =-5
√121× ∛-27
∛216 × √ = 36
√196 ÷ ∛ =-7