# SOLUTION: I just wanted to know do I need to make corrections to my answers and are they right....? 7&#8730;100/&#8730;500 = 7&#8730;5/5 4/&#8730;21 = 4&#8730;21 &#8730;400/5 = 16&#

Algebra ->  Algebra  -> Radicals -> SOLUTION: I just wanted to know do I need to make corrections to my answers and are they right....? 7&#8730;100/&#8730;500 = 7&#8730;5/5 4/&#8730;21 = 4&#8730;21 &#8730;400/5 = 16&#      Log On

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 Algebra: Radicals -- complicated equations involving roots Solvers Lessons Answers archive Quiz In Depth

 Question 299765: I just wanted to know do I need to make corrections to my answers and are they right....? 7√100/√500 = 7√5/5 4/√21 = 4√21 √400/5 = 16√5/5 √10/81 = 10/9 -3√180h^4 = -3h√90 √144 = 12Answer by stanbon(57347)   (Show Source): You can put this solution on YOUR website!I need to make corrections to my answers and are they right....? 7√100/√500 = = 7*10*10*sqrt(5) = 700sqrt(5) ======================= 4/√21 = 4√21 OK ======================= √(400/5) = sqrt(80) = sqrt(16)*sqrt(5) = 4*sqrt(5) ------------------ √(10/81) =sqrt(10)/9 ------------------ -3√(180h^4) = -3*sqrt(36h^2)*sqrt(5) = -3*6h*sqrt(5) = -18h*sqrt(5) =================== √144 = 12 OK ========================= Cheers, Stan H.