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 Solvers Lessons Answers archive Quiz In Depth

 Question 144460: Twice the square of an integer is 21 more than eleven times the integer. Find the integer. Click here to see answer by Alan3354(30993)

 Question 145076: Given that a = 2 Square root 3(c-a) over b, express c in terms of a and b. Click here to see answer by 24HoursTutor.com(40)

 Question 145154: find function f and g so that h(x)=(fg)(x) h(x) = 6/x square +8 Click here to see answer by stanbon(57352)

 Question 145299: I can use some help on this one...:) Thank you... Page 521 Number 12 I have to find the square root. Do not use a calculator or a table of square roots. What is the Square root of 25 Click here to see answer by jim_thompson5910(28595)

 Question 145300: Can you help me please...:) Page 521 Number 20 I have to find the square root without a calculator and or a table of square roots. What is the square root of 49/100? Click here to see answer by jim_thompson5910(28595)

 Question 145302: Can you help me? :) Page 526 Number 20 I have to simplify and assume that all variables represent positive numbers... square root w^14 Click here to see answer by jim_thompson5910(28595)

 Question 145303: I need help :) Page 526 Number 22 I have to simplify and assume that all variables represent positive numbers... square root 64x^8 Click here to see answer by jim_thompson5910(28595)

 Question 145354: I have to simplify and assume that all variables represent positive numbers... Can you help me please? Page 526 Number 34 square root of 20 Click here to see answer by nabla(475)

 Question 145359: I have to combine if possible no calculator or table of roots to be used...Can you help me please? Thanks...:) Page 530 Number 20 6square5y - square root 20y Click here to see answer by Alan3354(30993)

 Question 145357: I have to combine if possible no calculator or table of square roots to be used...Can you help me? Thanks :) Page 530 Number 8 square rooot7 - 3square root2 Click here to see answer by Alan3354(30993)

 Question 145358: I have to combine if possible no calculator or table of square root to be used..Can you help me please? Thanks...:) Page 530 Number 12 2square root27 - 4 square root3 Click here to see answer by Alan3354(30993)

 Question 145356: I have to combine if possible...Do not use a calculator or a table of square roots...Can you help me please? Page 530 Number6 square root 5 - 3square2w - square 50w Click here to see answer by Alan3354(30993)

 Question 145355: I have to simplify and assume that all variables represent positive numbers...Can you help? Page 526 Number 50 square root of 18x^2y^3 Click here to see answer by ankor@dixie-net.com(15652)

 Question 145390: can someone help me solve these??? please!!! sqrt x-5=9 and 3 to the sqrt of x-4-2=10 Click here to see answer by jim_thompson5910(28595)

 Question 145454: Can you help me? Thanks...:) I have to simplify and be sure to rationalize all denominators.....No calculators or table of square roots to be used. Page 542 Number 14 6/√17 Click here to see answer by stanbon(57352)

 Question 145453: Can you please help me ? I have to simplify and be sure to rationalize all denominators. No calculator or table of square roots to be used. Page 542 Number 6 √5/√81 Click here to see answer by stanbon(57352)

 Question 145450: Can you help me? I have to multiply and then be sure to simplify any radicals no using a calculator or table of square roots... Page 535 Number 18 √10(√2 + √3) Click here to see answer by Alan3354(30993)

 Question 145449: Can you help me on this? Thanks..:) Page 535 Number 8 I have to multiply and be sure to simplify any radicals in the answer...no calculators or table of square roots to be used. (2√7)(3√3) Click here to see answer by Alan3354(30993)

 Question 145985: Hi, can anyone help me with this... how to solve for x Click here to see answer by Edwin McCravy(8909)

 Question 146095: How many real roots does n² - 5n - 6 = 0 have? Click here to see answer by stanbon(57352)

 Question 146182: Hello, I need a little help with the following. Square root of 3x+1 - square root of x+1 = 2. I have tried solving this by isoloating the x+1 square root term, but keep getting a no solution answer, which is not correct. If someone could provide me the steps on how to get the correct answer, so I can learn the steps myself, that would be much appreciated. Click here to see answer by stanbon(57352)

 Question 146266: find the square root of 46 to the nearest tenth. Click here to see answer by jim_thompson5910(28595)

 Question 146302: Multiply the following (4 - square root 7) ( 3 + 2 square root 7) Click here to see answer by edjones(7569)

 Question 146693: The sum of a number and its square is 30. Find the number. I need not only the answer but the method of how it is solved. This is what I think the method is X + 30= Xsquared Click here to see answer by Alan3354(30993)
 Question 146693: The sum of a number and its square is 30. Find the number. I need not only the answer but the method of how it is solved. This is what I think the method is X + 30= Xsquared Click here to see answer by liuyifei(2)

 Question 146708: My question says to use the laws of exponents to Simplify and write my answer with positve exponents. I am totally lost on where to start as the negative exponent of 2m and the half exponentof the brackets are throwing me off. Any help would be appreciated. Thanks. (9k^2m^-4)^1/2. Click here to see answer by edjones(7569)

 Question 147024: I I am in need of some help in rationalizing the denominator ______5______ √[3] + √[5] Click here to see answer by ankor@dixie-net.com(15652)

 Question 147207: sqrt of x-6 - sqrt of x-6 = 2 I got this: sqrt of -x+6 - sqrt x-6 = 2 sqrt of -x+6 - sqrt -x+6 = 2 answer of 0=2, so the final answer is 0. I am supposed to check for extraneous answers also. Are my calculations correct? How do I figure for extraneous answers? Thank you for your help. Click here to see answer by jim_thompson5910(28595)

 Question 147373: I would like help solving this problem: (2 square root of 5-9) (square root of 5+7) Click here to see answer by vleith(2825)