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

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Question 482312: if i have a 15 x 43 ft rectangle-- how many square feet is that?
Click here to see answer by Alan3354(69443)

Question 482465: what is the square root of 44.44
Click here to see answer by cleomenius(959)

Question 482465: what is the square root of 44.44
Click here to see answer by Alan3354(69443)

Question 482969: I need help finding the square root of 80?
Click here to see answer by Student3354(13)

Question 482981: How do I calculate the square root of a number without a calculator.
Click here to see answer by richard1234(7193)

Question 482954: What is 4 more than the square root of 2x equals x? Please include all work.
Click here to see answer by ankor@dixie-net.com(22740)

Question 483097: how do i simplify radicals

Click here to see answer by MathLover1(20849)

Question 483215: √3 -8√3
Click here to see answer by edjones(8007)

Question 483214: 3√7(√3+4√7)
Click here to see answer by edjones(8007)

Question 483456: the square root of 156 explain please
Click here to see answer by edjones(8007)

Question 483737: I was wondering if you could help me with this problem? *Note. cbrt is cubic root. I wasn't to sure how to type it out: 2*cbrt(81)+3*cbrt(24)
Click here to see answer by Alan3354(69443)

Question 483944: How do you find the inverse of f(x)= 1/(x^2) or f(x)=1/(x^3)?
I don't really have a problem with finding inverses but I can't figure out these two. I usually switch x and y, so can anyone explain it to me in that manner? A detailed answer is really what I need. Thank you, in advance!
Click here to see answer by ankor@dixie-net.com(22740)

Question 484007: It would be greatly appreciated if you could help with this problem. I need to rationalize the denominator:
Click here to see answer by Tatiana_Stebko(1539)

Question 484007: It would be greatly appreciated if you could help with this problem. I need to rationalize the denominator:
Click here to see answer by Alan3354(69443)

Question 484312: What are the two square roots of 3.24

Click here to see answer by stanbon(75887)

Question 484312: What are the two square roots of 3.24

Click here to see answer by amoresroy(361)

Question 484832: (z-8)^2-7=0
Click here to see answer by nerdybill(7384)

Question 484830: (-4√11-√3)(√3-10√11)
Click here to see answer by Tatiana_Stebko(1539)

Question 485025: Which of the following is the radical expression of 2d^7/9
Click here to see answer by Alan3354(69443)

Question 485119: what is the square root of x to the 8th power? Please show me the work so that I may learn how to solve these problems.
Click here to see answer by ankor@dixie-net.com(22740)

Question 485853: What is 9 divided by the cubed root of 3?
Click here to see answer by Aswathy(23)

Question 485564: (5th root of -3)/(5th root of 96)
My hang up with this problem is what to do with the "5th" and how to simplify 96 down. If you could please help me with this I would appreciate it. Seeing your work will help the most.
Click here to see answer by lwsshak3(11628)

Question 485842: Please Simplify:
sqrt(3)/ (sqrt(3) + 1)
Click here to see answer by lwsshak3(11628)

Question 485048: Please help me solve this equation step by step:

Click here to see answer by lwsshak3(11628)

Question 480485: I was helping another user over email, and was ask this question. I am not certain of the answer and do not want to give any mis-information.
(-a^2 + b^2)(a^2 + b^2)
If you could help, it would be appreciated.
Cleomenius.
Click here to see answer by lwsshak3(11628)

Question 486950: how do I solve the square root of x+2 -1 outside the root = square root of x-5?
Click here to see answer by bucky(2189)

Question 487160: (6x)4 when x=2
the four is to the fourth power. i do not want the answer but i need to now if i put six and x to the fourth power then multiply or if i multipy 6 and x then fourth power.
Click here to see answer by ankor@dixie-net.com(22740)

Question 487442: Sum of 2819
Sum of 4003
Click here to see answer by richard1234(7193)

Question 487770: Please solve: sqrt(x)=-2 and sqrt(x)=2
Is 4 a correct answer?
Since 2*2=4 and also (-2)*(-2)=4

Click here to see answer by solver91311(24713)

Question 487926: what is the square root of 44x4y3? The numbers on the right of x and y are powers. I couldn't do it on my computer.
Click here to see answer by chessace(471)

Question 488843: Please help me solve this equation: .
Click here to see answer by josmiceli(19441)

Question 488335: I am having an issue with the following problem:
-√5-2u = 21
5-2u is all underneath the square root symbol.
A hint tells me to square both sides, but I can't get that to work.
Click here to see answer by bucky(2189)

Question 489000: Andrew factored the expression28x^2-42x^2+35x as 7x(4x^2+6x-5) . But when Melissa applied the distributive law and multiplied out7x(4x^2+6x-5) , she got28x^3+24x^2-23x ; thus, Andrew�s solution does not appear to check. Why is that? Please help Andrew to understand this better. Explain your reasoning and correctly factor the original expression, if possible. If the expression is prime, so state
Click here to see answer by MathLover1(20849)

Question 489227: Simplify.
3 square root -1/64
Thanks!
Click here to see answer by chessace(471)

Question 489379: Find the following.
square root of (a+9)^2
Thanks!
Click here to see answer by stanbon(75887)

Question 489639: Rationalize the denominator: 81x^2-y^2 divided by (3 * sq root x) - sq root of y
I get (9x+y)(9x-y)(3&sq root x) + y)/3x-y
Can I go any further?
Thanks!
Click here to see answer by mananth(16946)

Question 489790: My problem is: the square root of 1860 a^70 x^44
I worked it out and got the answer
2|a^35| x^22 sq root 465, but what I can't understand, is why is the "a" in absolute value and not the "x"? I was taught that if the square root is even and the exponent is even then use absolute value. Can you explain it to me?
Thanks so much!
Tracy
Click here to see answer by chessace(471)

Question 490169: Between what two whole numbers can you locate sqrt 86 ? ____ and ____
Click here to see answer by rfer(16322)

Question 490391: What is the 2nd root of 6 times the 4th root of 6?
Click here to see answer by rfer(16322)

Question 490601: I'm confused on this math problem.
use the laws of exponents to simplify
(3^7/6)^2/9=
Click here to see answer by Theo(13342)

Question 480921: SImplify by factoring. Assume that all expressions under radicals represent nonnegative numbers.
√48a^2 b
Click here to see answer by lwsshak3(11628)

Question 491113: Please I need help with the math problem:
simplify by factoring, assume that all expressions under radicals represent non negative numbers.
√75a^2b
Click here to see answer by ankor@dixie-net.com(22740)

Question 491371: Can you please explain the whole process of how to simplify the square root of 20. I see that the answer is 2 square roots of 5. But how do I get this answer?
Click here to see answer by Theo(13342)

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