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 213980: Explain the diffrence between a^3 x a^5 and (a^3)^5.
Click here to see answer by rfer(2688)

Question 211875: divided by

Click here to see answer by Alan3354(6092)

Question 214227: What is the square root of 140 in radical form, and how do you solve the problem??
Click here to see answer by solver91311(5072)

Question 214925: can you please check if i got the right answer for this problem: 2√8+7√8/1-√2
these are my steps:

9√8/1-√2 multiplied by (1+√2/1+√2)
9√8(1-√2)/1+2
and this is my answer: 9√8(1-√2)/3
Click here to see answer by jim_thompson5910(13794)

Question 215182: √3(2-5√3)
Click here to see answer by stanbon(26291)

Question 215215: please help!!!
x^2+x square root (x^2+x-2)=0

Click here to see answer by jsmallt9(594)

Question 215614: I have forgotten how to do 990/N = 45? It has been a long time. Thank you.
Click here to see answer by RAY100(1637)

Question 215702: x^2+2x+2=0
Click here to see answer by stanbon(26291)

Question 215818: Lost mom trying to help child and recall how to do this stuff
Square and Simplify- square root of 5, plus 2 square roots of 11, and all of that is in parantheses and then square all of that
Click here to see answer by checkley77(7072)

Question 216467: i'm confused as to how : the square root of (1/81)+(1/144) equates to the square root of 25/1296. is there something i'm missing?
Click here to see answer by jim_thompson5910(13794)

Question 216485: what is the square root of 675 expressed in the simplest radical form?
Click here to see answer by jsmallt9(594)

Question 217286:

Perform the operation and write the result in standard form
Click here to see answer by drj(1380)

Question 217338: simplify the expression
(16)^1/2
Click here to see answer by drj(1380)

Question 217657: sixth root of 20
Click here to see answer by rfer(2688)

Question 217864: What is the x-intercept for the function y=√x+1 note that the +1 would not be under the square root symbol.
Click here to see answer by Alan3354(6092)

Question 217924: There is a plus sign over a minus sign in front of the square root symbol - I do not remember this sign, what does it mean? The problems go from simple - plus/minus square root of 25 to asking when to use the symbol. Thank you.
Click here to see answer by RAY100(1637)

Question 218124: A 20 in (on the diagonal) TV has a width of 16 in. What is the height?
Click here to see answer by drj(1380)

Question 218124: A 20 in (on the diagonal) TV has a width of 16 in. What is the height?
Click here to see answer by MathTherapy(336)

Question 218122: Add. Simplify by collecting like radical terms if possible.
9(sqrt of 80) + 8 (sqrt of 125) = ?

Click here to see answer by RAY100(1637)

Question 218122: Add. Simplify by collecting like radical terms if possible.
9(sqrt of 80) + 8 (sqrt of 125) = ?

Click here to see answer by drj(1380)

Question 218148: The formula r = 2(sqrt of 5L) can be used to approximate the speed r, in miles per hour, of a car that has left skid marks of length L, in feet. How far will a car skid going 50 miles per hour?
Click here to see answer by RAY100(1637)

Question 218156: Simplify by factoring the squart root of 1125x^4.
Click here to see answer by RAY100(1637)

Question 218706: x^2-8x+32=0
Click here to see answer by drj(1380)

Question 218768: What is 4 square root of 12 + 5 square root of 27?
Click here to see answer by chibisan(120)

Question 218846: factor 27x3 + 125
sum of cubes
Click here to see answer by rapaljer(3622)

Question 219038: Grade the following problem:;
Perform the indicated operations:
√[50] + 2√[32] – √[8]
=sq rt [(5)(10)] +2 sq rt [(8)(4)- sq rt [(2)(4)]
=sq rt [5]sq rt [10]+2 sq rt[4] sq rt[4] –sq rt[2] sq rt[4]
=(5+2)sq rt[10]
=7 sq rt[10]

Click here to see answer by checkley77(7072)

Question 219024: What is the sixth root of 225?
Click here to see answer by rfer(2688)

Question 219417: how do you simplify
10square root of 84 over 4
would it be 10 square root of 4 and the square root of 21
I got this solution by using the quadratic formula im just not sure if im simplifying right
Click here to see answer by rapaljer(3622)

Question 220281: Multiply ( √(3x) - √2)2
assume all variables represent positive numbers
Click here to see answer by rapaljer(3622)

Question 220328: Simplify: x times the square root of twelve, all over the square root of four x to the fourth power.
Click here to see answer by user_dude2008(716)

Question 220390: 4 multiplied by the square root of 18
Click here to see answer by checkley77(7072)

Question 220961: what is the square root of 1/81
Click here to see answer by Alan3354(6092)

Question 220830: Write each product of primes factors, thin simplify. Give answers in simplifiied radical form.
3root of 135
Click here to see answer by ankor@dixie-net.com(6693)

Question 221079: why is the spuare root of -49 and the square root of 49 with the negative sign outside the radical sign not equal?
Click here to see answer by rapaljer(3622)

Question 221268: One eigth of the square root of 7 less than a number is 2. What is the number?
Click here to see answer by checkley77(7072)

Question 221427: (ax+by)^2 +(bx-ay)^2
Click here to see answer by rapaljer(3622)

Question 222079: square root of 108x^2y^5
Click here to see answer by checkley77(7072)

Question 222738: square root of 72x^2 y^3
please help, im stuck.
thank you.

Click here to see answer by stanbon(26291)

Question 222738: square root of 72x^2 y^3
please help, im stuck.
thank you.

Click here to see answer by jim_thompson5910(13794)

Question 222696: how do you do the square root of 18 plus 2 times the square root of 80
Click here to see answer by ankor@dixie-net.com(6693)

Question 222782: I need to simplify radicals
25 square root 24 divided by 5 square root 2
Click here to see answer by rapaljer(3622)

Question 223169: please help me solve simplify:
Click here to see answer by jim_thompson5910(13794)

Question 223169: please help me solve simplify:
Click here to see answer by Edwin McCravy(2922)

Question 223222: Write cube route of 16 in the form 2 to the k, k E Q
Click here to see answer by jim_thompson5910(13794)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520