# Questions on Algebra: Radicals -- complicated equations involving roots answered by real tutors!

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

 Question 566930: Please help me solve this equation:. what i have tried is squaring both sides to where i get the i subtracted the the answer i got was but my teacher said it was wrong he has said the correct answer is what did i do wrong? Click here to see answer by richard1234(5390)

 Question 567319: 7n^2=-4n...........I don't understand how to get the answer. My professor says to solve by using any method..i'm just not sure which method to use and how to use it correctly Click here to see answer by Alan3354(30993)

 Question 567403: simplify the following. i^11 (24/4i^5) i know that i^11= i but as far as the steps to take in order to simplify the equation I get lost. Click here to see answer by Alan3354(30993)

 Question 567489: square root of y+8 minus square root of y-6 equals -3, Help! I have tried isolating one of the radicals and raising both sides to the power of the index, then isolating the radical again, but webassign isnt taking my answer! I come up with 6 25/36. Click here to see answer by ankor@dixie-net.com(15661)

 Question 567803: How does 5 times the fourth root of r cubed divided by the square root of r simplify to 5 times the fourth root of r? Click here to see answer by stanbon(57412)

 Question 568317: g(x) = sqrt( -x) I know that that is an imaginary number. I understand that when y = 3, then x = -9. When y = 2, then x = -4, when y = 1, then x = -1. But what is the algebraic process to get those neg x values? Click here to see answer by Theo(3468)

 Question 568723: 4th root of 8 times the 4th root of 16 divided by the 8th root of 2 times the 8th root of 3 Click here to see answer by stanbon(57412)

 Question 569285: between which two consecutive integers is the cube root is 11 Click here to see answer by Alan3354(30993)

 Question 569543: Which is the better buy? 16oz bottle of lotion for \$2.39 or 24oz bottle of lotion for \$3.24? Click here to see answer by stanbon(57412)

 Question 570752: hi, i need help on solving the problem, x . i don't understand on how to solve this problem... it would be great if you can help me thank you Click here to see answer by mananth(12270)

 Question 571248: Suppose that a cylinder has a volume of 314 in^3 and a radius of 5 in. Find the height of the cylinder. Use pie symbol = 3.14. Here is the given equation,h= Vr^-2/3.14 I know we plug in 314in^3 for V and 5 for r, so h=3.14^3(5^-2)/3.14 The exponents are throwing me off with this equation....Please help me understand this, it is due today. Thank you Click here to see answer by scott8148(6628)

 Question 571247: Solve the equation for r. h= Vr^-2/3.14 I think I might have this figured out, but I'm not certain it is correct. Here is the final answer I got. r=(1/pie symbol*h)/V. All raised to the power of 2 Click here to see answer by scott8148(6628)

 Question 571469: √5(√2-√6) I know you have to use the distributive law. I attempted this but I'm now sure if either answer is correct. √10-√30 is this the final answer? or would it be 1/√20? Click here to see answer by reviewermath(535)

 Question 571813: Find the distance between the two points and the midpoint. (2,1) and (-4,-2). Please help!! I am stuck! I guess I don't understand how to figure out the part with the radicals. I got radical 41 but haave no idea what to do after that. Click here to see answer by KMST(1874)

 Question 572436: can you help me solve? what is the solution set? t(5t+2)=0 (need solution set) Thank you! Click here to see answer by nerdybill(6963)

 Question 572863: Im having a problem figuring out how to solve this equation. 3/2a-5=-1 rational expressions Click here to see answer by rfer(12677)

 Question 574043: b2(x + a) + 2b( x + a) - 24(x + a) Click here to see answer by cutechick587(2)

 Question 574554: I need help to simlify this equation. -3(square root180)-7 (square root 45) What I came up with so far is -3(square root10)*(sqaure root18)-7 (square root9)* (square root5) Click here to see answer by Earlsdon(6287)

 Question 574844: multiply (sqrt11+5sqrt3)(sqrt11-5sqrt3) I just need to know if I am right I thought that the 5sqrt3 would cancel out and I would be left with square root of 11 multiplied by square root of 11 giving me the answer square 121 is this correct? Click here to see answer by KMST(1874)

 Question 575113: Square root8 plus 1 all over square root 2? Click here to see answer by KMST(1874)

 Question 577137: From a 220 feet high lighthouse in the Bahamas island of Nassau, a person sees a ship on the horizon. Due to the curvature of earth, how far is the ship from the lighthouse? Use the formula: d = sqrt[3h/2], where d is the distance in nautical miles and h is the height in feet. Provide a similar example of when you were close to the beach, or elsewhere. Estimate how high above sea level you are and find how far the ship is from you. Click here to see answer by solver91311(16897)