math

i have another question as well..
square root of 3x=x-6..thanks i got an answer that doesnt work out os if u could jus help me out on these thx :)

I would square both sides first so you have
3x = x^2 - 12x + 36.
Then subtract 3 on both sides so you have
x^2 - 15x + 36 = 0.
Then factor that so you have
(x-12)(x-3)=0.
Therefore, either (x-12)=0 or (x-3)=0. x can either be 12 or 3. I checked this one - it's right!

  1. 👍 0
  2. 👎 0
  3. 👁 65
asked by joe

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math

    What are the solution sets of the following 3 problems,the square root of x squared + 3x = x-3, the square root of 3x + 10 = x + 4 and finally the square root of 8x - 2 = the square root of 2x? Help much appriciated. I will one as

    asked by Joseph B. on January 13, 2007
  2. College Algebra help please

    I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth

    asked by Krissy on January 20, 2013
  3. College Algebra

    I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth

    asked by Krissy on January 21, 2013
  4. College Algebra

    I need some help with a handful of questions. I need to see the steps on how to get to the final answers. I would also appreciate if you can explain how you got to those steps. Rationalize each expression by building perfect nth

    asked by Krissy on January 19, 2013
  5. Calculus

    A rectangle is bounded by the x axis and the semicircle = square root 25-x^2. What length and width should the rectangle have so that its area is a maximum? When I worked the problem out(which is a bit detailed). I started with y

    asked by LittlePanda on June 6, 2015
  6. algerbra

    could you please double check my work question:find the roots of the equation 2x^2+8x=12 by completing the square. leave answer in simplest radical form. work and answer: c=(b/2)^2 c(4/2)^2=4 2x^2 +8x=12 divide everything by 2 x^2

    asked by Liz on April 22, 2017
  7. algebra

    1.)correct 2.)wrong---> the first term is wrong 4(3a^2)^2 = 36a^4 3.) not sure on this one 4.) wrong---> - square root of six is not a solution Hope this Helps! 1)find p(-3)if p(x)=4x^3-5x^2+7x-10 =-184 2)If r(x)=4x^2-3x+7,find

    asked by manny on August 16, 2007
  8. math

    Say if these numbers make a right triangle and a Pythagorean triple: 2, 2 square root 2, and 2 square root 3. I am confident that the answer for both parts of the question is no, because when 2 is squared and when 2 square root 2

    asked by Erin on April 4, 2015
  9. Math simplifying mixed radicals

    Please help me simplify these following mixed radicals:: and show me how you did it cause I need to learn : I don't know how to type a square root sign so I just wrote square root and the numbers infront of the square root are

    asked by Miley on September 14, 2013
  10. Math Help!

    Four students worked to find an estimate for square root 22. Who is closest to finding the true estimate? A. Tiffany: "Use square root 16 and square root 25 to estimate." B. Todd: "I use square root 9 and square root 16." C.

    asked by Laura Ashley on November 3, 2014

More Similar Questions