math,correction,plz

posted by .

Solve each of the following quadratic equations by completing the square.

Problem#22 sect. 10.2

x^2-6x-3=0

My answer I keep getting two different answers : I get these two everytime i do it differently.

I get : x= 3 +- radical(12) or x = 3+-2radical(3)

Problem #28 sect10.2
2x^2+10x+11=0

My answer i keepgetting two different answer i don't know which one is correct:

x = (-10+-radical(12))/(2(2))
or
x=-2.5+-0.5radical(3)

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math,correction

    Problem 22 Solve each quadratic equation by completeling the square. x^2 -6x-3 = 0 MY answer: x = 3 +- 2 radical (3) Problem 28 2x^2+10x+11=0 My answer: x = -2.5 +- 0.5 radical (3) Problem 38 Find two consecutive positive integers …
  2. math,correction

    Problem 10 use the quadratic formula to solve each of the following quadratic equations. 2x^2-5x = 3 My answer: solutions are 3 and - (1)/(2) Problem 16 3x^2-2x+1=0 My answer: (2+- radical (-8))/(6)
  3. math,correction please

    Problem #1 Solve by completing the square 2x^2-4x-11=0 My answer: x = (2+/-sqrt 26)/(2) Problem #2 Solve by using the quadratic formula x^2-4x-60=0 My answer: x = (2+/-sqrt 16)/(2) You did not do it completeing the square. Please show …
  4. math,correction

    Is this correct now. Problem #1 solve by completing the square. 2x^2+8x+3=0 My answer: x=-2 +/- sqrt (5)/(2) Problem #2 solve by using the quadratic formula 5x^2+3x+1=0 My answer: No solution are defined. You are not completing the …
  5. Algebra 2

    Completing the square method allows you to solve any quadratic equation. For each of the following determine what number completes the square. I cannot find my notes on completing the square, can someone please help with these two …
  6. Algebra Quadratic Equations

    I am trying to define the different appraoches to solving quadratic equations. My book says using quadratic formula, completing the sqaure and factoring. I thought completing the square would be by facotring?
  7. Algebra

    Solve the quadratic equation. 3x^2-15x+18=0 I know that the formula to quadratic equation is x=-b+and-(square root)b^2-4ac divided by 2a. I know that a=3, b=-15 and c=18, then subsitute in and get two answers, my problem is that I …
  8. Algebra

    I was given this answers to a problems I solved but I do not understand what she means hope you can help. Before attempting to solve this quadratic equation, determine how many solutions there will be for this quadratic equation. Explain …
  9. Algebra

    I was given this answers to a problems I solved but I do not understand what she means hope you can help. Before attempting to solve this quadratic equation, determine how many solutions there will be for this quadratic equation. Explain …
  10. math

    (a) Complete the square by writing in the form . Note: the numbers and can be positive or negative. x^2-14x-17=(x-7)^2+ (b) Solve the equation by completing the square or using the quadratic formula. If there is more than one correct …

More Similar Questions