Questions on Algebra: Radicals -- complicated equations involving roots answered by real tutors!

Tutors Answer Your Questions about Radicals (FREE)

Question 798219: Simplify the expression.
sqrt(2/7)*sqrt(21/50)
Click here to see answer by stanbon(75887)

Question 798227: Simplify if necessary. Then rationalize the denominator.
-2sqrt(2)/3sqrt(15)
Click here to see answer by stanbon(75887)

Question 798231: Perform the indicated operation.
10sqrt(48)-3sqrt(72)+12sqrt(27)
Click here to see answer by KMST(5328)

Question 798225: Perform the indicated operation.
4sqrt(5)-9sqrt(5)+sqrt(5)
Click here to see answer by KMST(5328)

Question 798387: Rationalize the denominator.
3/ 2-sqrt(x)
Click here to see answer by harpazo(655)

Question 798381: Rationalize the denominator.
3
_________
2-sqrt(x)
Click here to see answer by jim_thompson5910(35256)

Question 798438: Write in expotential form:
sqrt(xy)^5
Click here to see answer by jim_thompson5910(35256)

Question 798440: Simplify the expression, then write it in radical form:
(5^1/3)^4/2
Click here to see answer by jim_thompson5910(35256)

Question 798582: Simplify if necessary. Then rationalize the denominator.

Click here to see answer by Finavon(81)

Question 798578: I need help solving this problem.
Solve the equation:
sqrt(k+3)=-4
Click here to see answer by Alan3354(69443)

Question 798434: Solve the equation.
3sqrt(x)=sqrt(6x+4)
Click here to see answer by ankor@dixie-net.com(22740)

Question 798909: Simplify 5√2/2-i by rationalizing the denominator.
Click here to see answer by stanbon(75887)

Question 798910: Simplify 3√810.
Click here to see answer by stanbon(75887)

Question 798974: Simplify the expression:
[sqrt(t)-sqrt(17)][(sqrt(t)+sqrt(17)]
Click here to see answer by solver91311(24713)

Question 798975: Simplify the expression.
(4sqrt(5)+5)^2
Click here to see answer by waynest(281)

Question 798976: Simplify the expression.
(9sqrt(5)-sqrt(8)(sqrt(3)+sqrt(7))
Click here to see answer by waynest(281)

Question 798977: Solve the equation: sqrt(k+3)=-4
Click here to see answer by solver91311(24713)

Question 799081: Perform the indicated operation: 6sqrt(54w^2)-4wsqrt(24)
Click here to see answer by stanbon(75887)

Question 799086: Simplify if necessary. Then rationalize the denominator.
sqrt(5a^2 b^5/ 7b)
Click here to see answer by stanbon(75887)

Question 799784: √7t*√7t
Click here to see answer by waynest(281)

Question 799852: how to evaluate the expression? 16 1/4
Click here to see answer by Alan3354(69443)

Question 799988: please help me solve this (square root of 17) to the power of 2
Click here to see answer by waynest(281)

Question 800040: 3sqrt18/5 - 5sqrt72/6 + 3sqrt98/4. What do I do with the denominators in this problem, and how do I solve?
thank you for your time.
Click here to see answer by mananth(16946)

Question 798579: Simplify the expression:
54sqrt(125)
__________
9sqrt(5)
Click here to see answer by tommyt3rd(5050)

Question 798230: Simplify the expression.
sqrt(100 m^6 n^3)
Click here to see answer by tommyt3rd(5050)

Question 798363: Simplify the expression.
sqrt(2/7)*sqrt(21/50)
Click here to see answer by tommyt3rd(5050)

Question 801784: "how to convert polar equation to rectangular equation
2r=sin(theta)sec62(theta)"
Click here to see answer by Edwin McCravy(20054)

Question 801875: I need to solve this equation for x:
sqrt(2x-1) - sqrt(x-1) = 1

This is what I have so far:
sqrt(2x-1)=sqrt(x-1)+1
2x+1=((sqrt(x-1) +1))((sqrt(x-1)+1)
2x-1=x-1+2sqrt(x-1)+1
(x+1)^2=(2sqrt(x-1))^2
(x+1)(x+1)=4(x-1)
x^2+2x+1=4x-4
x^2-2x+5=0
I know something is wrong because it doesn't factor.

Click here to see answer by solver91311(24713)

Question 802014: Is it important to simplify radical expressions before subtracting or adding them?
Click here to see answer by Alan3354(69443)

Question 765627: Engineers want to design brakes that will reduce stopping distances by 10%. How would this change the equation relating speed s, friction f, and stopping distance d?
s=√30fd
A)s=√0.09fd=0.3√fd
b)s=0.09√30fd
c)s=0.9√fd
d)s=√27fd=3√3fd
The equation below gives the maximum velocity in miles per hour that a vehicle can safely travel around a curve of radius r feet when friction is f. If the velocity is greater than Vmax, the tires will slip. Engineers find that under snowy conditions, Vmax = 15 miles per hour for a freeway off-ramp that has a radius of 50 feet. To the nearest tenth, what is the coefficient of friction for the off-ramp in these conditions?
Vmax=√14.88fr _______
Click here to see answer by ireneriveraa(1)

Question 802026: Please help. I need help with learning how to solve the product of a binomial and a conjugate. Here is an example:
1 - square root 7

Conjugate= 1 + square root 7
What should be the next step?
Click here to see answer by ankor@dixie-net.com(22740)

Question 802559: Please answer many as you can - Thank You

Solve the equation
5) 2b - 5 over b-2 minus 2 equal 3 over b + 2
2b-5/b-2 - 2 = 3/b+2
6) Radical -45+14n = n
7) -n + radical 16n+19 = 2
Thank You again
Click here to see answer by mananth(16946)

Question 803414: y = (x3 - 1)(1/4)
A all real numbers
B|x|>=1
Cx>=0
Dx>=1
E [0,1]
F [-1,1]

. The graph of y = SQRT(x3 - x) contains which point?
A (3, 24)
B(0, 1)
C(1, 1)
D(2, 6)
E (4, 2SQRT(15))
F none of the above

Click here to see answer by KMST(5328)

Question 803430: what two integers does 223 and 3.14 fall in between? please help me figure it out on my own?
Click here to see answer by Edwin McCravy(20054)

Question 803704: Select the value of x that is a solution for the equation.
6/x=7/x+3
Click here to see answer by waynest(281)

Question 803710: √2(7-√2)+9√2

Click here to see answer by waynest(281)

Question 803723: if a= sqrt(3)+sqrt(2) / sqrt(3)- sqrt(2)
b= sqrt(3)- sqrt(2) / sqrt(3)+sqrt(2)
what a+b
Answers given are 10, 100, 98, 99

Click here to see answer by mananth(16946)

Question 803875: Add or subtract. Simplify by collecting like radical terms if possible.
2 multiplied by the square root of 128 minus the square root of 8 plus 6 times the square root of 18.
Click here to see answer by edjones(8007)

Question 803967: What is the square root of 1/6

Click here to see answer by Alan3354(69443)

Question 804328: I'm trying to help my daughter find out how a teacher came up with this answer.
Sorry I do not know the symbol for radical.
Thank you
Click here to see answer by erica65404(394)

Question 804877: Simplify. Assume that no radicands were formed by raising negative quantities to even powers
25t^2
Click here to see answer by erica65404(394)

Question 804884: simplify. Do not use negative exponents in the answer.
-12a^-5/2a^-8
Click here to see answer by erica65404(394)

Question 805252: sqrt(90) x sqrt (40) - sqrt (80) x sqrt (18)
Click here to see answer by stanbon(75887)

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, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710