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

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Algebra: Square root, cubic root, N-th root

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Question 127871: Please help me solve this problem: For what values of x is √(1-x) a real number?
Click here to see answer by scott8148(3382)

Question 128754: 2x^2-3=15
Click here to see answer by jim_thompson5910(13787)

Question 128940: (b-12)^2
Click here to see answer by tutorcecilia(2042)

Question 129022:
y=x^2+3x+10

Click here to see answer by checkley71(8405)

Question 129136: What is the square root of 400t?
Click here to see answer by checkley71(8405)

Question 129685:

simplify expression--------+sqaure root of49a^2b^8c^12
Click here to see answer by checkley71(8405)

Question 129680This question is from textbook
: simplify (radical sign) n5 (note: n5 is in the radical sign)
simplify (radical sign) n9 (note: n9 is in the radical sign)This question is from textbook

Click here to see answer by checkley71(8405)

Question 129701This question is from textbook Algebra 1
: Simplify. Assume that variables are nonnegitive.
8) There is a negaive sign outside of the radical sign. The radial sign has the number 40 in it. I do not know how to get the answer.
9) There is a radical sign with the number 27 in it. I do not know how to get the answer.
10) There is a radical sign with the equation 25x-25 in it. I do not know how to get the answer. This question is from textbook Algebra 1

Click here to see answer by stanbon(26259)

Question 127872: Please help me solve this problem:
Determine whether each statement is sometimes, always, or never true.
√(3-1) is a real number for t ≥ 3?
Click here to see answer by SweetiePie123(2)

Question 129566: HOW DO YOU SOLVE THE QUESTION: What are the roots of the function y=x^2+4x-45.
i tried squaring but it doesnt factor.
Click here to see answer by scott8148(3382)

Question 129901: is it posible to do (example) the square root of 2 times the square root of 2 equals the square root of 4 which is 2
Click here to see answer by edjones(3292)

Question 130181This question is from textbook algebra
: Can I get help with this question? It's been buggen me and have no clue on how to solve it, please help
The problem is:
Find the hypotenuse of a right triangle with sides 5 inches and 10 inches.

Please help! Thank You!This question is from textbook algebra

Click here to see answer by stanbon(26259)

Question 130182This question is from textbook algebra
: This is a question I didn't understand.
The problem is:
If one side of a right triangle is 12 and it's hypotenuse is 13, what is the length of the other side?
Please and Thank You=)This question is from textbook algebra

Click here to see answer by stanbon(26259)

Question 130184This question is from textbook algebra
: I solved this problem and didn't get it right. It says write each of the following in exponential form.
What I got for this problem was
_____
1/x , but it was wrong

The problem is
_____
/x
Please help me, and Thank You=)
This question is from textbook algebra

Click here to see answer by stanbon(26259)

Question 130202: I'm not positive I have the correct answer of if I did this one correctly.
(2t-3)^2 = 36
Click here to see answer by josmiceli(3003)

Question 130217: Please help with this one i keep getting stuck.
(4-4i)-(-3-2i)
Click here to see answer by jim_thompson5910(13787)

Question 130216: Please help with this one i keep getting stuck.
(i+6)(3i-2)
Click here to see answer by jim_thompson5910(13787)

Question 130264This question is from textbook Algebra 2
: Why do you need absoulte values?This question is from textbook Algebra 2

Click here to see answer by ilana(236)

Question 130264This question is from textbook Algebra 2
: Why do you need absoulte values?This question is from textbook Algebra 2

Click here to see answer by ms.conerja(2)

Question 130453This question is from textbook

: how do you put the 4th root of 81 into a TI-84 plus calculator?This question is from textbook

Click here to see answer by ilana(236)

Question 130548This question is from textbook algebra
: I didn't understand this one either, it asks: One eighth of the square root of 7 less than a number is 2. What is the number?
Please and THank You=)This question is from textbook algebra

Click here to see answer by Earlsdon(4898)

Question 130960This question is from textbook Introductory Algebra
: Between what two consecutive integers is the square root of 78?This question is from textbook Introductory Algebra

Click here to see answer by stanbon(26259)

Question 130929: What is the answer to radical over 18 - radical over 8=
Thanks for all your help.
Click here to see answer by Earlsdon(4898)

Question 130904: A basic question to help grandaughter 15X 5th - 13X 4th how do you solve this
could you please emil me the answer at JJP301@comcast.net

Thanks
John
Click here to see answer by edjones(3292)

Question 131248: My question is: Cube root of (54/9) minus 3 times the square root of 1296.
Click here to see answer by checkley71(8405)

Question 131655: 2x^2-4x+16=0
Click here to see answer by stanbon(26259)

Question 131725: We just started the chapter on square roots and terms of i.I need help with a couple of them,but the problem is that there is no square root symbol on the keyboard.I will do the best I can to explain the questions.These need to be expressed in terms of i. (example: -36 is 6i or -81 is 9i)
1) square root of -98
2) square root of -4
3) square root of -27
4) square root of - outside of symbol then inside is -75
Thank you in advance for helping me.LH
Click here to see answer by josmiceli(3003)

Question 131826: f(x)=square root x-3
Click here to see answer by solver91311(5072)

Question 132095: what is the square root of 98 plus the square root of 32 plus the square root of 75 equal?
Click here to see answer by stanbon(26259)

Question 132137This question is from textbook intermediate algebra
: 4. Perform the indicated operations:
2√[48] + 7√[12] –√[27]
This question is from textbook intermediate algebra

Click here to see answer by TakeATuition.com(57)

Question 132136This question is from textbook intermediate algebra
: 3. Simplify:
√[81x12y8z10
This question is from textbook intermediate algebra

Click here to see answer by stanbon(26259)

Question 132165This question is from textbook intermediate algebra
: 5. Multiply:
(√[6] + 2√[2])(4√[6] – 3√[2])
This question is from textbook intermediate algebra

Click here to see answer by stanbon(26259)

Question 131947:
please help me to simplify....u-64u(-12u+14u)
Click here to see answer by checkley71(8405)

Question 132176:
Hello again. Last question it is again about the tsunami word problem but its another question. SQUARE ROOT 9.8*4000. I am really confused.
Click here to see answer by checkley71(8405)

Question 132520: Can you please help me this problem!
The directions are the solve it using the square root method:
x^2=16

I don't know!
Please help! =]
Click here to see answer by jim_thompson5910(13787)

Question 132567: Find each cube root or positive square root
8x sixth power y third power
Click here to see answer by stanbon(26259)

Question 132566: Find each cube root or positive sqare root
squae root of a second power b tenth power c sixth power
Click here to see answer by stanbon(26259)

Question 132565: Find each cube root or posite square root.
square root of 121
Click here to see answer by stanbon(26259)

Question 132660: i have to simplify this
1/8(3x+1)^(3/2) + 1/4(3x+1)^(1/2)
^ means to the power of if you didnt know
Click here to see answer by jim_thompson5910(13787)

Question 132700: Divide:
(x2 – 9x + 20)/(3x – 15) divided by (x2 – 16)/(9x + 36)
[(X^2-9X+20)/(3X-15)]/[(X^2-16)/(9X+36)]
[(X-5)(X-4)/3(X-5)]*[(X+4)/(X-4)(X+4)
9/3=3 ANSWER.

Click here to see answer by checkley71(8405)

Question 132699: Rationalize the denominator:
2 divided by √[3] + √[2]

Click here to see answer by stanbon(26259)

Question 132680: Rationalize the denominator:
2____
√[3] + √[2]

Click here to see answer by jim_thompson5910(13787)

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