SOLUTION: A) Square root of 45 x square root of 20 b) Square root of 45 + square root of 20 c) Square root of 45 - square root of 20

Algebra ->  Radicals -> SOLUTION: A) Square root of 45 x square root of 20 b) Square root of 45 + square root of 20 c) Square root of 45 - square root of 20      Log On


   

Question 294812: A) Square root of 45 x square root of 20
b) Square root of 45 + square root of 20
c) Square root of 45 - square root of 20
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A) Square root of 45 x square root of 20
= sqrt%2845%2A20%29+=+sqrt%28900%29
= 30, or -30
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b) Square root of 45 + square root of 20
sqrt%2845%29+=+sqrt%289%29%2Asqrt%285%29+=+3sqrt%285%29
sqrt%2820%29+=+sqrt%284%29%2Asqrt%285%29+=+2sqrt%285%29
--> 5sqrt%285%29
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c) Square root of 45 - square root of 20
= sqrt%285%29