SOLUTION: can you tell me which of the following are true?..i have some answers but i want to know if they are correct. 1.)Square root of 1/x = x^-1\2 2.)(x^1/2 + y^1/2)^2 = x+y 3.)1ne

Algebra ->  -> SOLUTION: can you tell me which of the following are true?..i have some answers but i want to know if they are correct. 1.)Square root of 1/x = x^-1\2 2.)(x^1/2 + y^1/2)^2 = x+y 3.)1ne      Log On

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 Question 46850: can you tell me which of the following are true?..i have some answers but i want to know if they are correct. 1.)Square root of 1/x = x^-1\2 2.)(x^1/2 + y^1/2)^2 = x+y 3.)1ne^3=3 4.)1n x^2=(1n x)^2 im not too certain about the last two but any help u can offer i will apreciate it! thank you. Answer by stanbon(60771)   (Show Source): You can put this solution on YOUR website!1.)Square root of 1/x = x^-1\2 OK if negative exponents are allowed. Otherwise:[sqrtx]/x ------------------------ 2.)(x^1/2 + y^1/2)^2 = x+y NO. You have to use FOIL, as follows: (sqrtx + sqrty)^2 =(sqrtx + sqrty)(sqrtx+sqrty) =x+2(sqrtx)(sqrty)+y =x+2sqrt(xy)+y --------------------------- 3.)1ne^3=3 TRUE ------------------- 4.)1n x^2=(1n x)^2 NO lnx^2 = 2lnx -------------------- Cheers, Stan H.