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

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Question 763126: tell whether each given set is closed under the operation shown.
a)(whole numbers),x
b)(even numbers), +
c)(5,10,15), /(divided by)
d)(0,1), x
e)(0,2,4,6,8), /(divided by) 2
f)(counting numbers), +
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Question 763087: ((the v stands for a radical and the / stands for the line separating the numerator and denominator))
15v7/7v3
or 15 radical 7 over 7 radical 3
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Question 764141: 4 to the power 0.2 is what?
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Question 763962: 4 to the power 0.2 -?
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Question 750768: Please simplify and show work for sqrt12 - 4sqrt5
Thank You
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Question 764758: X^3-5X=0
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Question 765302: Rationalize the denominator 7/10

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Question 765347: I need help on this question please!!

{6, 1, -4, -9, ...}
Write a formula for the general term (the nth term) of the arithmetic sequence. Do not use a resursive formula
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Question 765414: Help solve using the square root property (x+2)^2 = -7
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Question 765587: simplify. -4sqrt(75)+sqrt(25)
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Question 766379: Find the square root of the follwings by division methods
1. 20657025
2. 391538039
3. 3226694416
4. 0.053361
5. 3600.720036
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Question 767352: Dear Sir/Madam,
A pleasant day! can you please help me with this problem, guide me in finding the value asked. Here is the problem: Find the value of k so that the equation 4x^2+kx+6=0, has one root of -2

Thank you very much for your help!
Click here to see answer by rothauserc(4718)

Question 767561: Nakim simplified 3 times the square root of 2x plus x times the square root of 8x minus 5 times the square root of 18x and got -10x times the square root of 2x for an answer.
Part 1: Using complete sentences, explain what Nakim did wrong.
Part 2: Show all your work to simplify the expression.
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Question 768180: WHAT IS THE LOG FOR √10?
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Question 768372: What is the square root of the cube root of 6x?
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Question 768767: how in the world do you do this? thanks!

SQRT(4a + 1) = 1

CUBERT(3x - 8) = 1

SQRT(x + 4) = SQRT(x) - 2
Click here to see answer by josgarithmetic(39616)

Question 751456: Please help me solve this question: If x^2 + y^2 = 29 and xy=2, find the value of
i) x+y
ii) x-y
iii) x^4 - y^4
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Question 755204: 4√x=√2 find the value of x
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Question 756133: what is a quartic function with only the two real zeros given x = -4 and x = -1
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Question 768963: Hi can you please explain to me how i would solve the square root of -16 with i as the term? We're learning imaginary numbers. Thank you.
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Question 769484: �√324 - how do you solve this
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Question 769713: Solve for 4=x+a-2
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Question 769936: Rootx+y=11
Rooty+x7
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Question 768334: A2+2ab+b2 / a3-8b3
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Question 756105: -12x2 - 25x + 5 + x3 = 0 how many roots do the following equations have
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Question 767585: what is the answer to 2square root 18
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Question 748042: I am having a hard time trying to figure out how to solve square roots added with a number in between.
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Question 756149: what is the square root of 720
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Question 748688: square root of 10raised to power -23

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Question 759726: what is the square root of 45v to the sixth power

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Question 746075: Please help me solve this
2(2 square root sign 4) ^-2
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Question 767343: what is the square root of 216v
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Question 747701: how do you solve sqr 11 + sqr5/ sqr11-sqr5
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Question 766069: Rationalize the denominator 3 / 9- sqrt(5) Thanks in advance.
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Question 762465: square root 8-x close square root =17
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Question 753889: i need help with this prblm..
sqrt a plus sqrt a equals sqrt 20
what is a?
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Question 770495: a general wishing to arrange his men, who were 335250 in number in the form of square found that there were 9 men left over. how many were there in each row?
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Question 770627: 3^ sqrt 125(x-4)^3
is this the correct answer?
125x^3-1500x^2+6000x-8000????
Thanks
Click here to see answer by stanbon(75887)

Question 743479: simplify. square root 2 divided by square root 4x
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Question 761178: 2x=1-sqrt( 2-x)
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Question 758849: square root 108x minus square root 12x
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Question 744100: 9x2+-12x+4=0
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Question 762466: give the coordinates of the vertex. sketch the parabola y=x^2 -4
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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, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380