# SOLUTION: How do you solve this problem: The square route of k+9 minus the square route of k equals 3.

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 Question 70687: How do you solve this problem: The square route of k+9 minus the square route of k equals 3.Answer by stanbon(57245)   (Show Source): You can put this solution on YOUR website!The square route of k+9 minus the square route of k equals 3. -------- It's not square route; it's square root. ---------- sqrt(k+9) - sqrt(k) = 3 Isolate one of the sqrt terms, as follows: sqrt(k+9)= sqrt(k) + 3 Square both sides to get: k+9 = k+6sqrtk+9 6sqrt(k)=0 sqrtk=0 k=0 ---------- Check that answer in the original equation: sqrt(0+9) -sqrt(0)= 3 sqrt(0) - 0 = 3 3=3 It checks out alright. Cheers, Stan H.