# 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 570: i a trying to find the value of each variable but the problem says that if it is not a interger leave it in simplest radical form?what is a radical?? Click here to see answer by janinecb(25)

 Question 1827: Question: how i can solve this equation. x + y^(.5) = 7 y + x^(.5) = 11 i know the answer of these equations but dont know how to solve ? meance in first equation just y plus x to the power .5 and in second equation swap x and y. answer is x = 4 ...... and y = 9 but i want to know the method for solving this equation :-) Click here to see answer by khwang(438)

 Question 3393: When you use text-based communication, how do I interpert the expression sqrt xy + 9? What is xy + 9 if x=7 and y = 4 Click here to see answer by longjonsilver(2297)

 Question 3375: When you use text-based communication, how do I interpert the expression sqrt xy + 9? What is xy + 9 if x=7 and y = 4 Click here to see answer by D-loco(3)
 Question 3375: When you use text-based communication, how do I interpert the expression sqrt xy + 9? What is xy + 9 if x=7 and y = 4 Click here to see answer by farriem(7)

 Question 4826: 3X + 2Y= 8 X=3Y +10 HOW WOULD WE START THIS PROBLEM Click here to see answer by Abbey(339)

 Question 5435: my questions is : find the value of r so that the line through (8,r) and (4,5) has a slope of -4. a.11 b.-11 c.4 d.-4 thanks for your help! Click here to see answer by longjonsilver(2297)

 Question 5602: A price increased from \$78 to \$104. What is the percent of increase? My answer was 20.28% Thanks Click here to see answer by prince_abubu(198)

 Question 6843: I would appreciate it if a tutor could verify my answer to the below question. Solve for x: sqrt(5-x) +3=sqrt(3x+4) My answer: sqrt(3x+4)^2=[(sqrt(5-x)+3]^2 3x+4=(5-x)+(6)sqrt(5-x)+9 3x+4=14-x+(6)sqrt(5-x) 4x-10=(6)sqrt(5-x) (4x-10)^2=[(6)sqrt(5-x)]^2 16x^2-80x+100=36(5-x) 16x^2-80x+100=180-36x 16x^2-44x-80=0 (16x+20)(x-4) 16x+20=0 or x-4=0 16x/16=20/16 or x=4 x=-5/4 or x=4 ****x=-5/4 is an extraneous solution**** In advance, thank you for your assistance! Click here to see answer by longjonsilver(2297)

 Question 6837: I would appreciate it if a tutor could please verify my answer for the below problem: **There is a superscript 3 before the square root symbol** ^3 sqrt(x^2-7x-15) +3=0 My answer: ^3 sqrt(x^2-7x-15) +3=0 (^3 sqrt(x^2-7x-15)^3=-3^3 x^2-7x-15=-27 x^2-7x+12=0 (x-4) or (x-3) x-4=0 or x-3=0 x=4 or x=3 In advance, thank you for your assistance! Click here to see answer by longjonsilver(2297)

 Question 6999: what is and how i solve it please with a cherry on top!!!! 2x-3 _____ =4/7 4x-5 Rachel Click here to see answer by Earlsdon(6287)

 Question 7103: I would appreciate it if someone would help me solve this equation: sqrt3x-1/2=4 All of 3x-1/2 is supposed to be square rooted. So I tried squaring both sides of the equation to get rid of the square root. So I got: 3x-1/2=16 Then I cross multiplied and now I have: 3x-1/32 It's been a year since I took Algebra1, so even if I've been correct so far, I don't know where to go from here. Thank you in advance to the tutor who helps me with this. Click here to see answer by prince_abubu(198)

 Question 7159: Can you show me how to do the following: all of this squared (x^2+3x+6) = 4 Don't you sq what is in the paren. and then sq 4 also to solve? Click here to see answer by sabanasir(22)

 Question 7248: If one side of a right triangle is 12 and its hypotenuse is 13, what is the length of the other side? Click here to see answer by CharStar(110)

 Question 7245: If y varies inversely as x^2, and y = 2 when x = 4, what is the constant variation? Click here to see answer by Earlsdon(6287)

 Question 7249: The distance an object falls is directly proportional to the square of the time it has been falling. After 6 seconds it has fallen 1296 feet. how long will it take to fall 2304 feet? Click here to see answer by Earlsdon(6287)

 Question 7607: The directions say to solve the system r-s=-3 r+s=9 Click here to see answer by bonster(299)

 Question 7612: I would really appreciate it if someone could solve and explain this problem for me- reduce to a radical having integral radicands. radical sign then 1/2 - Thanks so much! Click here to see answer by longjonsilver(2297)

 Question 7847: I need help with solving this problem. It's rationaling the denominator. Ranicand 56 over radicand 40. Thanks for the help! Click here to see answer by Earlsdon(6287)

 Question 7834: I need to simplify in simplest radical form. If I have two square roots with different numbers do I need to get the same number in each root? 6 square root of 7 * 3 square root of 5 would it be 30 square root of 35 * 21 square root of 35 Click here to see answer by pvrbrahmam(12)

 Question 7837: I need helping solving this: one eighth of the square root of 7 less than a number is 2. what is the number? I believe it should look like this 1/8 square root 7 what is next? Click here to see answer by pvrbrahmam(12)