Questions on Algebra: Radicals -- complicated equations involving roots answered by real tutors!

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 Algebra: Radicals -- complicated equations involving roots Solvers Lessons Answers archive Quiz In Depth

 Question 111763: Hey, can someone help me please? Radical equations and graphs: Solve for x √(x+7) +5=x This is what I have so far: √(x+7 ) =x-5 (√(x+7))^2= (x-5)^2 x+7= x^2+25x+7 Click here to see answer by freedom1(2)

 Question 330949: Let me preface this question with a MEA CULPA as I do not know how to enter the square root sign via the keyboard. question: the sq. root of (x+2)(x-6) = x-5; my answer: I squared both sides of equation; x^2 - 4x -12 = x^2 -10x + 25; solved for x; x = 37/6 (might that be correct?) Thanks for any and all help. Click here to see answer by Alan3354(30962)

 Question 331068: Multiply and simplify by factoring √(2b^5 )×√(22c^6 ) Thank you Click here to see answer by Alan3354(30962)

 Question 331072: Multiply and simplify by factoring √75×√135 Thank you Click here to see answer by neatmath(300)

 Question 331206: Hello, I would like to know, what is ? Is it or ? Or is my answer completely off? I'd like to see the answer with the radical sign still in it. So, please don't simplify it down to the decimal. I can do that myself. I'm also new to the formula plotting system, sorry if I get things wrong! Thanks a bunch!! -Lucero Click here to see answer by ankor@dixie-net.com(15624)

 Question 331330: Simplify by factoring, assume that all expressions under the radical represent non-negative numbers. Please show each step? Thank you. ∜(162x^4 y^6 ) Thank you again Click here to see answer by vleith(2825)

 Question 331396: I am having problems with radical expressions. I am instructed to simplify by taking roots of the numerator and the denominator. Assuming all expressions under radicals represent numbers. Click here to see answer by solver91311(16868)

 Question 331564: Simplify by taking roots of the numerator and the denominator. Assume that all expressions under radicals represent positive numbers. ∛125x^14/y^3 Click here to see answer by JBarnum(2044)

 Question 331472: Need assistance on how to begin to simplyify by factoring the following problem. √(245k^7q^8 ) Click here to see answer by ankor@dixie-net.com(15624)

 Question 332063: I need help with this question. Solve for x. 8xy^2-2x=6 Click here to see answer by jim_thompson5910(28476)

 Question 332098: Find the following ∛(y^3 ) Assume that letters can represent any real numbers! Please show each step Thank you Click here to see answer by edjones(7569)

 Question 332102: In the right triangle find the length of the side not given Give an exact answer and an approxiimation to three decimal places.. Side A=3 B=5 and C= Pleas show each step Click here to see answer by edjones(7569)

 Question 332455: what is the answer to the question " x squared + 4x + 4 = 0" thank you. Click here to see answer by nerdybill(6948)

 Question 332566: Use the laws of exponents to simplify (6^3/4)^2/11 I am stuck and do not know where to begin, Please show each step Thank you Click here to see answer by Alan3354(30962)

 Question 332891: multiply and simplify. assume all variables represent nonnegative real numbers.Write anwswer in radical notation. can you please help me to do this problem, I do not understand this at all. thank you Click here to see answer by mananth(12270)

 Question 333004: what are the two consecutive integers of square root of 300.. Click here to see answer by Alan3354(30962)

 Question 333248: Two airplanes start at the same time and fly toward each other from points 1000 km apart at rates of 420 km/h and 330 km/m . After how many hours will they meet? Click here to see answer by rfer(12644)

 Question 333258: 1. Many people know that the weight of an object varies on different planets, but did you know that the weight of an object on Earth also varies according to the elevation of the object? In particular, the weight of an object follows this equation: w=Cr^-2, where C is a constant, w is the weight, and r is the distance that the object is from the center of Earth. a. Solve the equation w=Cr^-2 for r. b. Solve the equation w=Cr-2 for C. c. Suppose that an object weighs 10 pounds when it is 100 miles from the center of the earth. Find the value of C? Show your work. d. Use the value of C you found in 1c (above) to determine how much the object would weigh in Imaginary Village which is 200 miles from the center of the earth. Show your work. (3 points) 2. The equation gives the distance, D, in miles that a person can see to the horizon from a height, h, in miles. a. Solve this equation for h. b. Imaginary Mountain has an elevation of 9 miles. How far, to the nearest tenth of a mile, can you see to the horizon from the top of Imaginary Mountain? Explain how you arrived at this answer. Click here to see answer by solver91311(16868)