SOLUTION: I really do not understand these problems please help Rewrite the following in simlified radical form 1)square root 54x^4 Simplify the following expressions as much as possibl

Question 195463: I really do not understand these problems please help
Rewrite the following in simlified radical form
1)square root 54x^4
Simplify the following expressions as much as possible
2)6w square root63u^3-usquare root7uw^2
Rationalize the denominator and simplify
3)square root21/square root 77
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
# 1

Start with the given expression

Factor 54 into . Note: 9 is the largest perfect square factor of 54

Factor into

Break up the square root.

Take the square root of 9 to get 3

Take the square root of to get "x"

Multiply

So where

# 2

Start with the given expression

Simplify to get

Simplify to get

Multiply

Factor out the GCF

Combine like terms.

So where every variable is non negative.

# 3

Start with the given expression

Multiply both the numerator and denominator by

Multiply to get

Multiply to get

Reduce

So
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