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

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Question 571451: Multiply.
(6+sqrt5)(6-sqrt5)
Click here to see answer by josmiceli(6778)

Question 571216: Please help to solve this equation by completing the square:
3x^2 - x - 1 = 0
Click here to see answer by josmiceli(6778)

Question 570825: find the cube root of 108 x16 without actual muulitipliction
Click here to see answer by mananth(10541)

Question 570400: whats the answer to y2-6y+9
Click here to see answer by Alan3354(21555)

Question 570276: (8+4)√2 = 19
Click here to see answer by JBarnum(1826)

Question 570008: 2x+9 squared
Click here to see answer by jim_thompson5910(21667)

Question 570007: the square roots of 7 square
Click here to see answer by jim_thompson5910(21667)

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(10541)

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 Alan3354(21555)

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(580)

Question 569554:
Show work so that I can see how you get the answer
Click here to see answer by JBarnum(1826)

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(48516)

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

Click here to see answer by sEahors3(4)

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

Click here to see answer by jim_thompson5910(21667)

Question 568376: What is the square root of 125n?
Click here to see answer by Edwin McCravy(6932)

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(4789)

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(4789)

Question 566589: let me know how to find the cube root of 250
upto two decimal places
Click here to see answer by rfer(10417)

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(1140)

Question 566287: how do you solve y over 4 minus 6 equals negative 15?
Click here to see answer by ad_alta(170)

Question 565732: What Are two real solutions for x4=2401 over 625 ?
Click here to see answer by stanbon(48516)

Question 565495: sqrt2^5 ......Im trying to ask...what is the square root of 2 to the 5th power? It cant be a decimal....how is this possible?
Click here to see answer by scott8148(5879)

Question 565495: sqrt2^5 ......Im trying to ask...what is the square root of 2 to the 5th power? It cant be a decimal....how is this possible?
Click here to see answer by Alan3354(21555)

Question 565277: Please help me simplify cube root of
Click here to see answer by mananth(10541)

Question 564949: why is math so difficult? please answer ASAP. thanks (:
Logan(:
Click here to see answer by Alan3354(21555)

Question 564950: we learn units after units in Math class...but when are we ever going to use this in real world situations? i mean when are we going to need to know that the cubed root of fourteen plus twelve equals x minus fifteen? i mean....get real. i need an answer soon. thanks(:

Sincerely,
Logan-Ann Wetzbarger
Click here to see answer by Alan3354(21555)

Question 564946: what is 8√50 - 3√32 ?
Click here to see answer by issacodegard(60)

Question 564808: 3square root54
Click here to see answer by Alan3354(21555)

Question 564746: 7×t√=360
Click here to see answer by Theo(2967)

Question 564613: x-squared + 10x - 7 = 0 , completing the square
Click here to see answer by ad_alta(170)

Question 564503: im trying to do
Click here to see answer by TutorDelphia(189)

Question 563745: squared (4x+1)=squared ((squareroot(x-2)) +3)
Click here to see answer by nyc_function(2626)

Question 563714: Hi I need help solving this:
It's the last step of my geometric problem, but I have no idea how to multiply that!? Please help me, thank you.
Click here to see answer by Tatiana_Stebko(1060)

Question 563659: how to simplify the square root of 216
Click here to see answer by josmiceli(6778)

Question 561701: what is the answer to this equation 2 cubed times 3 squared plus 3 times 14 minus 4
Click here to see answer by stanbon(48516)

Question 559492: √63 + √7 + √64 = ?
The correct answer is 4√7 + 8, but I can't figure out how to get it.
Thanks
Click here to see answer by richard1234(4789)

Question 559492: √63 + √7 + √64 = ?
The correct answer is 4√7 + 8, but I can't figure out how to get it.
Thanks
Click here to see answer by Earlsdon(6098)

Question 559515: add or subtract the square root of 108x - the square root of 27x
Click here to see answer by Theo(2967)

Question 559494: √y^3 can be written as (y^3)1/2 or (y)3/2.
GIven this, what does (8)5/3 equal?
The correct answer is 32, but I can't figure it out.
Please help me.
Thanks
Click here to see answer by KMST(578)

Question 558967: x^2-2x-8/x^2-x-6
Click here to see answer by stanbon(48516)

Question 558893: 5x^2-6=0
Click here to see answer by Edwin McCravy(6932)

Question 558894: use the square root property to solve the equation

(x+1)^2=9

2) x^2=121
Click here to see answer by Theo(2967)

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