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

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Question 565732: What Are two real solutions for x4=2401 over 625 ?
Click here to see answer by stanbon(75887)

Question 566287: how do you solve y over 4 minus 6 equals negative 15?
Click here to see answer by ad_alta(240)

Question 566573: Evaluate What is the square root of b^2-4ac where a=2, b=-5, and c=-3
Click here to see answer by Maths68(1474)

Question 566589: let me know how to find the cube root of 250
upto two decimal places
Click here to see answer by rfer(16322)

Question 567207: in the problem 3m^5-3m why is the answer 3m(m^2+1)(m+1)(m-1) instead of 3m(m+1)(m+1)(m+1)(m-1) ? I can not find any reason to have descending powers in factoring the difference of two squares??
Click here to see answer by richard1234(7193)

Question 568138: What is the formula for finding the square root of 225? I know the answer is 15, I'm trying to figure out the formula, please. I know how to figure it using the factor tree, but I don't know how to do the square root formula Thank You so much!
P.S.
When I clicked on the drop down list to pick a topic, nothing came up. There were no words, just blank space & a check mark, so I'm sorry if the topic was off.

Click here to see answer by richard1234(7193)

Question 568376: What is the square root of 125n?
Click here to see answer by Edwin McCravy(20054)

Question 568441: simplify square root of x squared minus 2x plus 1

Click here to see answer by jim_thompson5910(35256)

Question 568541: hello, i really didnt understand how to find the indicated roots of letters. here is my worksheet question 1:
Find the indicated nth root(s) of A
1.n=6, a=1,000,000
thank you for the help.
Click here to see answer by issacodegard(60)

Question 568805: A square has an area of 2.25 meters what is the measurement of each side in meters

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Question 569442: How do your figure out an equation where 1.058 is to the 20th power?
Click here to see answer by onlydabest503(3)

Question 569529:
I saw that your email address was attached to a Math Problem you solved at an earlier date on algebra.com. I was hoping you could help me with a problem I am having as well. Here is the problem, thank you in advance, if you cannot help me I understand :)

During the first part of a trip a canoeist travels 80 miles at a certain speed.
The canoeist travels 9 miles on the second part of the trip at a speed of 5 mph slower.
The total time for the trip is 4 hrs. What was the speed on each part of the trip?
Please provide exact answers for each part!
The speed on the first part of the trip was :__________ mph
The speed on the second part of the trip was:___________ mph
Simplify your answer. Type as integer or a decimal, round to the nearest hundredth

Click here to see answer by stanbon(75887)

Question 569554:
Show work so that I can see how you get the answer
Click here to see answer by JBarnum(2146)

Question 569632: How do you factor this equation and solve for n in the following--
n squared minus n equals 20
n=5 but I am not sure how to get the answer other than by intuition--thanks
Click here to see answer by htmentor(1343)

Question 569667: QUESTION 1
Please post a 150-300 word response answering all parts to the following question.
Quadratic equations may be solved by graphing, using the quadratic formula, completing the square, and factoring. What are the of each of these methods? When might each pros and cons method be most appropriate? Which method do you prefer? Explain why.

QUESTION 2
Please post a 150-300 word response to the following:
In your own words, explain how to solve a quadratic equation by completing the square. Demonstrate the process with your own example. Please explain step by step how you worked through your example.

Click here to see answer by JBarnum(2146)

Question 569930: Im sooo confused i need help figuring this out!! please and thanks for helping:):)
1. Simplify the following expression; express in terms of i. Square root of -54
2. Simplify the following expression. square root of -14 and square root of -56
Click here to see answer by mananth(16946)

Question 570007: the square roots of 7 square
Click here to see answer by jim_thompson5910(35256)

Question 570008: 2x+9 squared
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Question 570276: (8+4)√2 = 19
Click here to see answer by JBarnum(2146)

Question 570400: whats the answer to y2-6y+9
Click here to see answer by Alan3354(69443)

Question 570825: find the cube root of 108 x16 without actual muulitipliction
Click here to see answer by mananth(16946)

Question 571216: Please help to solve this equation by completing the square:
3x^2 - x - 1 = 0
Click here to see answer by josmiceli(19441)

Question 571451: Multiply.
(6+sqrt5)(6-sqrt5)
Click here to see answer by josmiceli(19441)

Question 571711: Determine whether the graph of y = 5x2 − 2x + 9 opens up or down and whether it has a maximum or minimum point.

Click here to see answer by Alan3354(69443)

Question 571740: is there a short cut in solving the result of 125 cubed minus 125 squared. my grandson was in a math contest and someone solved the problem almost instantly.
How is that done?
Click here to see answer by Alan3354(69443)

Question 572978: 4√(x)=√(9x+9)
Click here to see answer by nerdybill(7384)

Question 573141: What is the square root of 1700? This is what I have so far:
1700 412
-16
--
81 100
81
----
82 1900
Now we are lost. I am a homeschool mom trying to help my son understand this.
I have the answer, but not how to get the answer, so if you could include the math for each step I would appreciate it. Thank you for your help
Click here to see answer by scott8148(6628)

Question 573499: I don't undertand how to simplify radical expressions.I am in Algebra 2 and the problem is as follows:
Find the cubed root of (x^6/250). I was brainstorming and I know that 125*2=250 and 125 is a perfect cubed root, but I dont know if that is relevant. I would be really thankful if you could help me solve this problem. Thanks you so much!
Click here to see answer by mananth(16946)

Question 574504: I need help, I have tried this question several times and still am not getting it right.
During the first part of a trip, a canoeist travels 55 miles at a certain speed. The canoeist travels 4 miles on the second part of the trip at a speed 5 mph slower. The total time for the trip is 5 hrs. What was the speed on each part of the trip?
Click here to see answer by josmiceli(19441)

Question 575965: Lesson topic-Factoring differences of squares Question-Solve equation by factoring. 36x-16x^3= 9x^2-4x^4 .. i know you have to put it in descending form : 36x-16x^3-9x^2+36x then you find the GCF:x(4x^3-16x^2)(-9x+36) then what?? pleaseeeee with cherry on top help!
Click here to see answer by solver91311(24713)

Question 576104: use technology to approximate the real zeros of...
F(x)= 0.2x^3-2x^2+6
Click here to see answer by Alan3354(69443)

Question 577082: How do you find 3 to the square root of 7?

Click here to see answer by KMST(5328)

Question 577760: if x^2 + 1/x^2 =4 , then find the value of x^3 + 1/x^3

Click here to see answer by richard1234(7193)

Question 578136: Simplify and express in simplest radical form: The cube root of x^2y^3.
Click here to see answer by ad_alta(240)

Question 578133: Simplify and express in simplest radical form: 3 times the square root of 3/13.
Click here to see answer by ad_alta(240)

Question 578134: Simplify and express in simplest radical form: 3 times the square root of 8 + 2 times the square root of 36.
Click here to see answer by ad_alta(240)

Question 578135: Simplify and express in simplest form: The square root of 2 + the square root of 2/9.
Click here to see answer by ad_alta(240)

Question 578376: I have a algebra problem that, I need help solving. Can you please help me.
sqrt (x+20) -x=0

Click here to see answer by scott8148(6628)

Question 578376: I have a algebra problem that, I need help solving. Can you please help me.
sqrt (x+20) -x=0

Click here to see answer by stanbon(75887)

Question 579307: How to determine the cubic root step by step without calculator?

Click here to see answer by Theo(13342)

Question 579582: sqrt(x+7) = x-5
Click here to see answer by dfrazzetto(283)

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