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

Tutors Answer Your Questions about Radicals (FREE)

Question 720371: Please help us solve:
9^(2x+3)=2187
Keep getting negative number.
Thanks
Pat
Click here to see answer by josmiceli(19441)

Question 720501: Find all the roots of the equation x^4-4x^3-6x^2+4x+5=0.
Click here to see answer by stanbon(75887)

Question 720546: Need help with the following please.
Solve. Check for extraneous solutions.
square root 3x + 2 - square root 2x + 7 = 0 (dont know how to type sq. root symbol or exponets)
So far I have the following:
sq. root 3x + 2 = sq. root 2x + 7
9x to the second power + 4 = 4x to the second power + 49
5x to the second power - 45
Don't know what to do from here.
Click here to see answer by josgarithmetic(39616)

Question 720573: How is this done?
5 square root 3x^2y^8z^-1 divided by 625z
Click here to see answer by jsmallt9(3758)

Question 720403: Help us simplify:
4sqrt of n^4/16
Click here to see answer by jsmallt9(3758)

Question 720403: Help us simplify:
4sqrt of n^4/16
Click here to see answer by Alan3354(69443)

Question 720688: what is 4 times the square root of 2 plus 3 times the square root of 8?
Click here to see answer by jsmallt9(3758)

Question 721245: how do you simplify the following:
3 divided by (radical 6-1)
Click here to see answer by stanbon(75887)

Question 722831: Hey, I need some help solving this problem, please help!
3[(x+3)^(3/4)]=81
I don't know if the 3 in the 3[(x+3)^(3/4)] goes into the root. So does it end up to look like this-> 3 multiplied by the 4th root of (x+3)^3 or 3(x+3)^3 all inside the 4th root?
Thanks so much, I do need a reply in the next 15 or less minutes so please and thank you. Could you make sure you tell me all the steps on how to solve this problem. I need to make sure I'm going threw the whole thing correctly.
Thanks again,
Kylee Hill
Click here to see answer by josgarithmetic(39616)

Question 723140: Solve: ^4(x^2)*^5(x^3)
Answer will be one of the following:
^20(x^5)
^10(x)
^x^10(x)
^x^20(x)
Any help would be very much appreciated!
Thank you
Click here to see answer by stanbon(75887)

Question 723422: I need help solving this problem:
Express in simplest radical form:
1. √8 2. √18 3. √27 4. √32 5. √50 6.√24 7.√4x 8.√40x^2 9.75a^3 10. √72ax^2
11.1/3 √45 12. 2√a^5 13. √108 14.√72a^2 15.√54x^3 16. √a/4 17. √1/2 18.√3/8
19.√6x/25 20. 1/4√32x^2 21.√54a^4 22. 2/3√12 23. a√a^3 24. √200 25. √125x 26.√128
27. √242 28. √338 29. 1/2√72m^3 30. √3/x 31. 31. 10√4/5 32. √7/12 33. √r/2s
34. √48a^7 35. -3√28 36. 5/3√108 37. √99m^2 38. 2√4a^5x^2 39. a√8a^3x^4 40. -√200d^6 41. √63x^15y^10 42. √90a^3b^5 43. √675c^9 44. √a^2/3 45. √9/5 46. 2√2/3
47. √24x/5y 48. √5d/8g 49. √9/2a^3 50. √16 51. √1/4 52. 1 + √54 53. 3-√48 54. 2+√12/2
Click here to see answer by Alan3354(69443)

Question 723717: Simplify. Use absolute value notation when necessary. show all work.

√9x^2-30x+25
Any help will be greatly appreciated! i am so lost! :(
Click here to see answer by solver91311(24713)

Question 723926: Is it possible to add 4cuberoot3x + 5cuberoot10x
Click here to see answer by fcabanski(1391)

Question 724436: what is the answer to 5 radical 32 ?
Click here to see answer by KMST(5328)

Question 724436: what is the answer to 5 radical 32 ?
Click here to see answer by stanbon(75887)

Question 724450: 5 radical 3 + radical 3
Click here to see answer by MathLover1(20849)

Question 724464: what is the answer to 4 radical three-fourths ? thanks!
Click here to see answer by MathLover1(20849)

Question 724709: sqroot of (7-x) - sqroot x-6 = -1
How do i solve?
Click here to see answer by solver91311(24713)

Question 724761: sqrt(8x^3)-6 sqrt (18x)
Click here to see answer by stanbon(75887)

Question 725249: what s the square root of 448x to the third power

Click here to see answer by erika514(39)

Question 725354: I'm having trouble with this problem it is 8x squared -16x+6=0. We are supposed to factor and solve it. Please help me understand it I have some of it worked out.
8x squared -16x+6=0 add: -16 multiply: 48
-1 times -48,-4 times -12
8x squared -4x-12x+6=0
I am stuck right here.
Click here to see answer by solver91311(24713)

Question 725451: simplify each number
64^3.5
Click here to see answer by jsmallt9(3758)

Question 725208: what is the simplified radical form of 4.2
Click here to see answer by jsmallt9(3758)

Question 726569: What is the formula for the speed of the particle, v, when simplified?
a)v=Eqm/2
b)v=2qE/m
c)square root of 2qEm/m
d)square root of qE/2m
Thank you for your help.
Click here to see answer by lynnlo(4176)

Question 727087: Please Help me solve these equations SQRT(2x-3)=x - 3
Click here to see answer by lynnlo(4176)

Question 727132: Please help I dont really understand. -3√5-√6-√5
Click here to see answer by stanbon(75887)

Question 727148: cube rt of 64(x+10)^3
Click here to see answer by MathLover1(20849)

Question 727086: what is square root of 2/7 minus square root of 7/2?
what is 5 square root 16/3 minus square root 9/2?
what is square root x/a minus square root a/x?
what is 3 square root 5/12 plus squre root12/5 minus 1/3 square root 60?
what is 4 square root 72s^4 minus 2S square root 200s^2?
what is square root x^2/49 minus x^2/121?

Click here to see answer by checkley79(3341)

Question 728080: Please help me solve this equation:
Click here to see answer by lwsshak3(11628)

Question 728092: What does the + and - signs in front of a radical mean when they are both present.
Click here to see answer by Alan3354(69443)

Question 728317: State the degree of each polynomial equation. Find all of the real and imaginary roots of each equation, stating multiplicity when it is greater than one.
x^3 - 4x^2 - 6x = 0
I know that the degree is 3 because of the highest power shown. but i was thinking that i should use the quadratic equation to find the multiplicity. i was wrong according to the answer section...2 +/- sqrt 10 please, can you show the work so that i can understand this problem
Click here to see answer by Edwin McCravy(20054)

Question 728367: Find the polynomial equation with real coefficients that has the given roots?
3 - i

i think that this is a reverse on a quadratic equation, but i have no notes on the procedure...can you please help
Click here to see answer by jim_thompson5910(35256)

Question 728548: in a paragraph describe how to simplify each expression:
16 1/2
Click here to see answer by jim_thompson5910(35256)

Question 729072: square root of x+7=square root of 2x-3 (+2) not under the square root)
Click here to see answer by lynnlo(4176)

Question 729142: What is the square root of 5 multiply the square root of 60
Click here to see answer by MathLover1(20849)

Question 729727: which number doesnt have a reciprocal
a . -1
b . 0
c . 1/1000
d . 3
Click here to see answer by jim_thompson5910(35256)

Question 729734: cube root of 64x^6 y^3 /cube root of 7z^2
Click here to see answer by Alan3354(69443)

Question 729985: what is the squareroot of 8 multipliyed by the squareroot of 32

Click here to see answer by rfer(16322)

Question 730005: simplify the expression. Assume that all variables are real numbers. 3^sqrt8(x+10)^3
Click here to see answer by lynnlo(4176)

Question 730091: A circular solar cell must deliver 18 watts of energy. If each square centimeter of the cell that is in the sunlight produces 0.01 watt of energy, how long must the radius of the cell be?
Please help me, I'm having a head ache just looking at the question. If you can, please explain how to do the question. Thank you so much!!
Click here to see answer by Alan3354(69443)

Question 730081: help me write the expression 243^-4/5 in radical notation. and evaluate the radical expression in simplified form.
and find the maximum y-value on a graph of y=f(x). f(x)=-x^2+4x+5
and completely factor the polynomial of 5x^3+45x^2+5x+45.
and solve and check 3x^2+2x=16
Thank you for all your help.
Click here to see answer by lynnlo(4176)

Question 730270: solve:(sqrt)(x-15)=(sqrt)(x)-3
Click here to see answer by lynnlo(4176)

Question 730484: square root of 3/5 * square root of 6/4
Click here to see answer by rfer(16322)

Question 730692: rationalize (sqrt)(7)/(5)(sqrt)(7)+(3)
Click here to see answer by stanbon(75887)

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