Questions on Algebra: Square root, cubic root, N-th root answered by real tutors!

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Question 644483: please explain
b = (a^�-12)^1/2
Substituting this positive square root and simplifying gives
this:
a^4 - 4a^3 - 12a^2 + 192 = 0 how this happened?

Click here to see answer by Edwin McCravy(20081)

Question 644514: square root of (x - 6) + square root of (x - 1) =5
It gives the answer 10 but I do not understand how it came to that.
Click here to see answer by jim_thompson5910(35256)

Question 644878: I need help with this problem
Click here to see answer by MathLover1(20855)

Question 644916: 2y to the 3rd power when y is 4
Click here to see answer by jim_thompson5910(35256)

Question 644934: 3x to the 4th power -5 when x is 5
Click here to see answer by jim_thompson5910(35256)

Question 644980: How do you solve (m+1)^3 +1?
Thanks
m+1^4
Click here to see answer by sannah_03(1)

Question 644989: 1+(m+1)^3=?
Click here to see answer by MathLover1(20855)

Question 645122: help me solve the cubed root of 16x^3y^5
Click here to see answer by jim_thompson5910(35256)

Question 645227: what is w if the square root of 79 is divided by 3?
Click here to see answer by Alan3354(69443)

Question 645604: Complete the square:

Click here to see answer by ewatrrr(24785)

Question 645873: How do you simplify the square root of a certain number?
Click here to see answer by Alan3354(69443)

Question 646385: what is the cubed root of 3/4x.
Click here to see answer by solver91311(24713)

Question 646405: what is the cubed root of 3/4x, where the x is in the denominator
Click here to see answer by solver91311(24713)

Question 646461: What is +_square root of 10000
Click here to see answer by MathLover1(20855)

Question 646844: what is 2 times the cubed root of 40 plus the cubed root of 625?
Click here to see answer by ewatrrr(24785)

Question 647301: x^2+y^2+z^2- xy -yz-zx-yz=0 then prove that x=y=z

Click here to see answer by Edwin McCravy(20081)

Question 647613: how would you simplify the cubed root of "a" to the power of 5/2
Click here to see answer by josmiceli(19441)

Question 647836: i dont know how to find the square root of a fraction. Can you please help me?
Click here to see answer by checkley79(3341)

Question 648428: please help me solve this equation:
sqrt ( 32 ) times(multiply) sqrt ( 6 )

i am trying to simplify this equation down to a number and a square root..
my last step i got
sqrt ( 8 ) (times) sqrt ( 4 ) (times) sqrt ( 6 )
and i dont know what to do next...
thank you in advance for your help!

Click here to see answer by lynnlo(4176)

Question 648880: (-343/125) to the 1/3 power

Click here to see answer by swincher4391(1107)

Question 648818: Use the discriminant to determine the number of solutions of the quadratic equation, and whether the solutions are real or complex. Note: It is not necessary to find the roots; just determine the number and types of solutions. Can someone help with these 3 questions please?
1. 2x2 + 5x + 5 = 0
2 3z2 + z - 1 = 0
3 m2 + m + 1 = 0

Click here to see answer by MathLover1(20855)

Question 648923: how do you find the cubed root of a number
Click here to see answer by swincher4391(1107)

Question 649621: Please help me. I've tried to solve this problem and im completely lost. The problem is what is the ? I'm incapable of doing factions that are square roots so can you please help me. Thank you.
Click here to see answer by ewatrrr(24785)

Question 650133: My buddy buddy needs help:
([2^2]^3 g^4 h^4)^3
Click here to see answer by MathLover1(20855)

Question 650133: My buddy buddy needs help:
([2^2]^3 g^4 h^4)^3
Click here to see answer by josmiceli(19441)

Question 650219: how do yu solve square root problems?
Click here to see answer by lenny460(1073)

Question 650375: I had this question on a test a week ago, but still cant figure it out:
([3^2]^3 g^6 h^7)^2
Click here to see answer by Alan3354(69443)

Question 650529: How do you solve 2 root 5 - 5 root 2?
Click here to see answer by Alan3354(69443)

Question 650820: Please help me solve this problem

Click here to see answer by ewatrrr(24785)

Question 651162: square root of 50 divided by square root of 12
Click here to see answer by Alan3354(69443)

Question 651521: evaluate the expression cube root -64/27
Click here to see answer by jim_thompson5910(35256)

Question 651541: simplify by removing factors from radicand: square root 288, cube root 500, cube root -250, 4th root 192
Click here to see answer by ankor@dixie-net.com(22740)

Question 651730: the square root of 20 is
Click here to see answer by jim_thompson5910(35256)

Question 651860: Simplify the following expression

Square root sign -104 square root sign -8
Click here to see answer by MathLover1(20855)

Question 651875: 4r�-28r=-49. Solve by completing the square
Click here to see answer by Edwin McCravy(20081)

Question 651867: What is the square root of x to the 8th power?
Click here to see answer by MathLover1(20855)

Question 652639: How do I spproximate the square root of 399 using differentials?
Click here to see answer by Edwin McCravy(20081)

Question 652792: how do you do a problem like sqaure root then under that you 3n+12= sqaure root n+8
Click here to see answer by stanbon(75887)

Question 653436: What is the 3 cube of 320? How can I get the answer with the decimal?
Click here to see answer by solver91311(24713)

Question 653853: 3=1.11^n make n the subject please im really confused on this part i used trail and error, logs and got 12. but i want to find it thru simple algebra. Thanx
Click here to see answer by MathTherapy(10809)

Question 655284: the sum of the square of x and 5 in word problem
Click here to see answer by MathLover1(20855)

Question 655514: How would I go about changing a large entire radical like the square root of 9100 into a mixed radical?
Click here to see answer by DrBeeee(684)

Question 655468: use the square root property to solve (x-22)^2=27
Click here to see answer by jim_thompson5910(35256)

Question 655531: solve by completing the square x^2-6x=-5
Click here to see answer by jim_thompson5910(35256)

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