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

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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(6628)

Question 128754: 2x^2-3=15
Click here to see answer by jim_thompson5910(28504)

Question 128940: (b-12)^2
Click here to see answer by tutorcecilia(2152)

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

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Question 129136: What is the square root of 400t?
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Question 129685:

simplify expression--------+sqaure root of49a^2b^8c^12
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Question 129680: simplify (radical sign) n5 (note: n5 is in the radical sign)
simplify (radical sign) n9 (note: n9 is in the radical sign)
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Question 129701: 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.
Click here to see answer by stanbon(57246)

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(6628)

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(7569)

Question 130181: 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!
Click here to see answer by stanbon(57246)

Question 130182: 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=)
Click here to see answer by stanbon(57246)

Question 130184: 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=)

Click here to see answer by stanbon(57246)

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(9660)

Question 130217: Please help with this one i keep getting stuck.
(4-4i)-(-3-2i)
Click here to see answer by jim_thompson5910(28504)

Question 130216: Please help with this one i keep getting stuck.
(i+6)(3i-2)
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Question 130264: Why do you need absoulte values?
Click here to see answer by ilana(307)

Question 130264: Why do you need absoulte values?
Click here to see answer by ms.conerja(2)

Question 130453: how do you put the 4th root of 81 into a TI-84 plus calculator?
Click here to see answer by ilana(307)

Question 130548: 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=)
Click here to see answer by Earlsdon(6287)

Question 130960: Between what two consecutive integers is the square root of 78?
Click here to see answer by stanbon(57246)

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(6287)

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(7569)

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(8403)

Question 131655: 2x^2-4x+16=0
Click here to see answer by stanbon(57246)

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(9660)

Question 131826: f(x)=square root x-3
Click here to see answer by solver91311(16868)

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(57246)

Question 132137: 4. Perform the indicated operations:
2√[48] + 7√[12] –√[27]

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

Question 132136: 3. Simplify:
√[81x12y8z10

Click here to see answer by stanbon(57246)

Question 132165: 5. Multiply:
(√[6] + 2√[2])(4√[6] – 3√[2])

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Question 131947:
please help me to simplify....u-64u(-12u+14u)
Click here to see answer by checkley71(8403)

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(8403)

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(28504)

Question 132567: Find each cube root or positive square root
8x sixth power y third power
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Question 132566: Find each cube root or positive sqare root
squae root of a second power b tenth power c sixth power
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Question 132565: Find each cube root or posite square root.
square root of 121
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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(28504)

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(8403)

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

Click here to see answer by stanbon(57246)

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

Click here to see answer by jim_thompson5910(28504)

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