Answer:
6y^2√10 +12y √5
Step-by-step explanation:
3√10(y^2√4 + √8y)
Distribute
3√10(y^2√4) +3√10 (√8y)
3y^2 √40+3y√80
We know that √ab = √a√b
3y^2 √4*√10+3y√16√5
3y^2 *2*√10+3y*4√5
6y^2√10 +12y √5
14.
Subtracting a negative number is like adding a positive number. So, you can change 9 - (-5) into 9 + 5, which is much simpler. Then, just add to get 14.
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Answer:
2 equivalent expressions w/ negative signs in different places.
a) 
=-1/5 x and x/-5
b) 
=14/-y and -14/1/y
c) 
=a/1/b and 1/b/1/a
d) 
=-c/y and -c/1/y
No, as if you reduce 4/16 it is 1/4, not 3/5, therefore they are not equivalent.
