# 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 Solvers Lessons Answers archive Quiz In Depth

 Question 49778: Find the distance between each pair of points (-3,0) and (4,0) Click here to see answer by tutorcecilia(2152)

 Question 49780: simplify by combining like terms x=sqrt of 18-3 sqrt of 8x^2 Click here to see answer by tutorcecilia(2152)

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

 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(180)

 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(3500)
 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 rapaljer(4667)

 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(3500)

 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(3500)

 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(307)

 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(57219)
 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 hulamc723(15)

 Question 49925: Give the axis of symmetry and the x-intercepts: Y = 2x^2 - 8x - 42 Click here to see answer by rapaljer(4667)

 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(57219)

 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(57219)

 Question 50226: simplify: 3 square root 3/2 - 4 square root 2/3 - square root 4 Click here to see answer by tutorcecilia(2152)

 Question 50213: WHAT IS THE SQUARE ROOT OF 3 13/3 Click here to see answer by Nate(3500)

 Question 50398: find two consecutive positive integers such that the sum of their square is 85. Click here to see answer by stanbon(57219)

 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(57219)

 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(57219)

 Question 50543: 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) Click here to see answer by Nate(3500)

 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(4667)

 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(4667)

 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(4667)

 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)