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

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Question 132974: Please help me!!!I have this problem and I do not have any idea how to go about solving. If x= radical 6/7, then evaluate (x + 1/x)exponient 2.....I hope this makes sense..I didn't know how to type it in exactly..Any help would be greatly appreciated.. Thankyou Angie
Click here to see answer by josmiceli(19441)

Question 132991: Simplify by factoring. Assume that all expressions under radical represent nonnegative numbers.
sqrt( 18a^2b )
I'm confused as I've seen similar problems set up stating to think of them as positive numbers. Please help.
Click here to see answer by jim_thompson5910(35256)

Question 132997: Find the following.
root ( 18, (-10)^18 )
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Question 132995: Simplify by taking roots of the numberator and the denominator. Assume that all expressions under radicals represent positive numbers.
root (3,512x^8/y^3)
Click here to see answer by stanbon(75887)

Question 132993: Rationalize the denominator. Assume that all expressions under radicals represent positive numbers.
(sqrt (c) - sqrt (d)) / (sqrt (c) + sqrt (d))
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Question 132837: Find the following.
root ( 18, (-10)^18 )
Click here to see answer by nycsharkman(136)

Question 133062: 2 sqrt[48] + 7 sqrt[12] - sqrt[27]
so far i got 2 sqrt 6*8 + 7 sqrt 4*3 - sqrt 3*9
now Im lost do not what to do next
Click here to see answer by solver91311(24713)

Question 133183: Subtract. Simplify by collecting like radical terms if possible.
root (8,50) - root (5,2)
I'm not certain how to do this problem.
Click here to see answer by vleith(2983)

Question 133228: Radical Expressions
simplify.
I am trying to help my daughter with her homework and I am at a loss. I have never seen problems like these, and surely am at a loss as where to start with them.
\/810+\/240-\/250
Click here to see answer by jim_thompson5910(35256)

Question 133239: Hi, If someone could please help me that would be great. I need to rationalize the denominator. It is a number 1 in the (numerator)over top of a square root of 7 minus a square root of 5 in the denominator. I came up with the answer of a square root of 7 + a square root of 5 in the numerator over top of a 2 in the denominator. Is this right. I couldn't figure out how to write out this problem on the computer.
Thanks, Randy
Click here to see answer by stanbon(75887)

Question 133245: Hi, I need a little help on this please. It looks simple but I'm confused!
I need to put this in radical notation. x with a negative exponent of -2/3

I believe the answer would be the number 1/x with a positive exponent of 2/3 that would get rid of the negative. but I'm unsure of the radical notation is it a
cubed 3 outside the radical and inside the radical an x with an exponent of 2 or is it a negative -2 this is where I'm having the problem. Hope you can help
Thanks, Randy
Click here to see answer by checkley71(8403)

Question 133193: how do you change radicals to fractions??
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Question 133367: 2 square root of 3 divide by square root square root of 15. rationlize the denominator and simplify each expression

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Question 133413: Write an irrational fraction that when rationalised the solution is 5. Prove your answer
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Question 133450: (3-2i)^2
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Question 133447: square root of -25/ negative square root of -16
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Question 133449:
(1+4i)(1-3i)
Click here to see answer by checkley71(8403)

Question 133677: What is the cubed root of 24a^3y^6z?
no matter what I try I come up with the cubed root of 24z*ay^2
Click here to see answer by scott8148(6628)

Question 133677: What is the cubed root of 24a^3y^6z?
no matter what I try I come up with the cubed root of 24z*ay^2
Click here to see answer by edjones(8007)

Question 133670: What is the square root of 18x + the square root of 8x equal? Please!
I used my best guess and guessed 5 times the square root of 2x but I know that it is wrong.
Thanks
Click here to see answer by scott8148(6628)

Question 134009: Here is my problems that I am having trouble with and I had my teacher explain it to me three different times but I just don't get it. I have been working on this sheet for 4 days.I do thank you so much for any help you can give me. Thanks, in advance. Kayla
6\/20+ 8\/5-5\/45
8\/48-6\/75+7\/80
(3\/15)(-4\/45)
(\/5-\/6)(\/5+\/2)
Click here to see answer by vleith(2983)

Question 131851: Story Problem:
An isosceles right triangle with legs of length "a".
I need to write a formula in simplified radical form for the length of the hupotenuse "c" in terms of "a"
Click here to see answer by vleith(2983)

Question 134015: I messed up with the last question i submitted.
We'll say that \ax+b\ means the square root of that.
\5x+6\-2= -\3x+4\ solve for x. please help me with the steps to solving it
Click here to see answer by snwbrdfrk(10)

Question 133969: 5 cube root of 16 + cube root of 54
Click here to see answer by vleith(2983)

Question 134030: I am having trouble with this problem, can you help please? Kayla

8* sqrt 48 - 6* sqrt 75 + 7 * sqrt 80
Click here to see answer by checkley71(8403)

Question 134104: How can you simplify radicals?
Click here to see answer by solver91311(24713)

Question 134290: 8 radical 5 + 3 radical 5
Click here to see answer by jim_thompson5910(35256)

Question 134294: radical 18 + radical 12 + radical 8
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Question 134295: 3 radical 7 - 2 radical 28
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Question 134293: 8 radical 3 - 2 radical 2 + 3 radical 2 + 5 radical 3
Click here to see answer by jim_thompson5910(35256)

Question 134299: - radical 196x^2 y^3
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Question 134291: 2 radical 15 - 6 radical 15 - 3 radical 15
Click here to see answer by jim_thompson5910(35256)

Question 134292: 16 radical x + 2 radical x
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Question 134298: ( radical 6 + radical 8) ( radical 24 + radical 2)
Click here to see answer by scott8148(6628)

Question 134307: (3 + radical 5) (3 - radical 5)
Click here to see answer by edjones(8007)

Question 134459: simplify 1/2 of the square root 28 and the squareroot of 4000x squared y
Click here to see answer by stanbon(75887)

Question 134532: How would you solve the problem i^7+i^2+i^12+i^9 over (1-i)^2?
Click here to see answer by Earlsdon(6294)

Question 134532: How would you solve the problem i^7+i^2+i^12+i^9 over (1-i)^2?
Click here to see answer by josmiceli(19441)

Question 134560: Solve the equation w=Cr-2 for r where w is the weight of an object, C is a constant and r is the distance that the object is from the center of the earth.
Click here to see answer by stanbon(75887)

Question 134599: Hi, today in class i recieved a work sheet with 26 problems on it. The teacher was not there so we had a sub. The sub. did not teach us how to solve the problems. If you could help me on this one and explain it i would really appreciate it.
square root of 5 times the square root of 10.
Thankyou.
Click here to see answer by vleith(2983)

Question 134587: ( radical 2 + radical 3) ( radical 3 + radical 2)
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Question 134577: 8 radical 32 + 4 radical 50
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Question 134607: x-9 = the square root of x-3
Click here to see answer by solver91311(24713)

Question 134607: x-9 = the square root of x-3
Click here to see answer by vleith(2983)

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