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

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Algebra: Square root, cubic root, N-th root

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Question 49782: find the length x in the triangle. express your answer in simplified radical form. who'a sides are 12, 8, x
Click here to see answer by venugopalramana(3286)

Question 49778: Find the distance between each pair of points (-3,0) and (4,0)
Click here to see answer by tutorcecilia(2042)

Question 49777: Please solve the equation and check your solution.
sqrt of 2y+7+4=y
Click here to see answer by tutorcecilia(2042)

Question 49776: Please solve the equation and be sure to check your solution.
sqrt of 4x+1+3=0

Click here to see answer by tutorcecilia(2042)

Question 49780: simplify by combining like terms
x=sqrt of 18-3 sqrt of 8x^2
Click here to see answer by tutorcecilia(2042)

Question 49832: Find the distance between the two points
(3,7) and (-12,7)
Click here to see answer by venugopalramana(3286)

Question 49831: Solve:
sqrt of 6x +8 +2x=16
Click here to see answer by mathchemprofessor(65)

Question 49830: Simplify ( sqrt of 7 + 4)(sqrt of 7 - 4)
Click here to see answer by mathchemprofessor(65)

Question 49829: simplify:
sqrt of 40 + sqrt of 80 + sqrt of 45 - sqrt of 10
Click here to see answer by gsmani_iyer(161)

Question 49828: Evaluate if possible
sqrt of -225
Click here to see answer by gsmani_iyer(161)

Question 49843:

How do you simplify radicals that have a variable in them.

   ____

⁴Öx⁶y²

Click here to see answer by AnlytcPhil(958)

Question 49906: I am doing something wrong. I am missing a step. I know this is probably easy but those are the harder ones for me. I can get some help?
Add or subtract as indicated:
a. 4√72 - 2√48

b. √75 - √48

Click here to see answer by Nate(3495)

Question 49903: I am a bit confused with these problems. Can someone help me?
Solve each radical expression:
a. √ (2X – 1) = X – 2 This the square root of what is in the parenthesis.

b. √3X + 5 = 11 This is the square root of 3x

Click here to see answer by Nate(3495)

Question 49904: I am lost with these? I am not getting the correct answer...
Multiply as indicated:
a. (√11 - √ 5 ) (√11 +√ 5)
b. ( 1 + √2) 2

Click here to see answer by Nate(3495)

Question 49908: I don't think I am doing my order correctly. Please help me with these problems.
Add or subtract as indicated:
a. ( - 6X3 + 7 X2 – 9X + 3) + (14X3 + 3X2 –11X –7)

b. (13X4 - 8X3 + 2X2 ) – (5X4 –3X3 + 2X2 –6)
Click here to see answer by ilana(236)

Question 49930: If a pebble is dropped toward a pond from the top of a 360-ft building, its height, h, after t seconds is given by h = -16t^2 + 180. How long does it take the pebble to pass through a height of 60 feet?
Click here to see answer by stanbon(26259)

Question 49923: Graph: y = 2x^2 - 4x
Click here to see answer by rapaljer(3620)

Question 49925: Give the axis of symmetry and the x-intercepts:
Y = 2x^2 - 8x - 42
Click here to see answer by rapaljer(3620)

Question 49955: = -1
Click here to see answer by Earlsdon(4898)

Question 49926: If the length of a rectangle is 8 feet less than 6 times its width and the area of the rectangle is 192 sq. ft., what are the dimensions of the rectangle? Show work.
Click here to see answer by stanbon(26259)

Question 50220: Simplify:
4 + square root of 2
____________________
3- 2 square root of 2
Note: Our teacher did not get it from a text book
Click here to see answer by stanbon(26259)

Question 50226: simplify:
3 square root 3/2 - 4 square root 2/3 - square root 4
Click here to see answer by tutorcecilia(2042)

Question 50213: WHAT IS THE SQUARE ROOT OF 3 13/3
Click here to see answer by Nate(3495)

Question 50400: Use the quadratic formula to solve the following quadratic equation.
2x^2-5x-3
Click here to see answer by stanbon(26259)

Question 50398: find two consecutive positive integers such that the sum of their square is 85.
Click here to see answer by stanbon(26259)

Question 50389: Decide all values of b in the following equation that will give nore or more real number solutions.
(a) 3x^2 + bx-3=0
(b) 5x^2 + bx+1=0
(c) -3x^2 + bx-3=0
(d) write a rule for judging if an expression has solutions by looking at it in standard form.
Click here to see answer by stanbon(26259)

Question 50468: What is Sq Rt(x-1) SQUARED? what I am asking is that the problem takes the square root of (x-1) and then squares it. Is it x-1 or x+1.
If you could answer the whole problem that would be appreciated, but it is a calculus question, but I am stuck on one of the algebra parts.
Thanks.
Click here to see answer by stanbon(26259)

Question 50394: solve the following quadratic equation by factoring or by any other techniques.
x^2-9x-4=6
Click here to see answer by venugopalramana(3286)

Question 50543This question is from textbook Blitzer College Algebra Essentials
: Evaluate the expression without using a calculator. I know the answer is 1/16 but I don't know how to get there.
32^(-4/5)This question is from textbook Blitzer College Algebra Essentials

Click here to see answer by Nate(3495)

Question 50561: (square root x) to the second power =X
Click here to see answer by mszlmb(115)

Question 50648: Simplify:
(5-i squrt3)(5+i sqrt3)
Thank you, thank you, thank you! You guys are life savers!
Carolyn:)
Click here to see answer by rapaljer(3620)

Question 50644: simplify: 4sqrt81*x^6*y^8
I hope I wrote that right! It's 4square root 81x to the 6th y to the 8th.
Thanks so much!!!!
Carolyn:):)
Click here to see answer by rapaljer(3620)

Question 50653: I asked this question a few minutes ago and I wrote it wrong. Rapaljer was kind enough to try to answer it but because of my mistake his answer doesn't help me:)
The question is:
Fourth root of quantity: 81*x^6*y^8
Thank you:)
Click here to see answer by rapaljer(3620)

Question 50703: Simplify:
sqrt125*x^6*y^4
Thanks man!!
Matt
Click here to see answer by stanbon(26259)

Question 50752: Simplify:
sqrt(x^2+18*x+81)
Thanks again:)
Click here to see answer by Nate(3495)

Question 50789: square root of x+1 + square root of x-1
_______________________________________ = 4x-1 divided by 2
square root of x+1 - square root of x-1
Click here to see answer by darq(90)

Question 50731: Simplify:

Click here to see answer by darq(90)

Question 50887: 9-4y
Click here to see answer by sinadone(8)

Question 51068: how do you divide the square root of 144 to the 9th root by the square root of 9 to the 9th power?
Click here to see answer by darq(90)

Question 51026: Can you please help me understand how you find the square root of 78?
Click here to see answer by darq(90)

Question 51152: Find 3 non zero numbers such that the sum of the squares of two of the numbers equals the square of the 3rd number. I nned to find five different sets (three numbers)
Click here to see answer by THANApHD(104)

Question 51375: what is the square root of 17
Click here to see answer by checkley71(8405)

Question 51633: how do i Simplify by rationalizing the denominator: 5 times square-root of 6 divided by negetive square-root of 3.
Click here to see answer by rchill(405)

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