math,correction,plz

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)

  1. 👍 0
  2. 👎 0
  3. 👁 206

Respond to this Question

First Name

Your Response

Similar Questions

  1. Math check please

    1. Solve the system of equations y=2x^2-3 y=3x-1 a)no solution b)(-1/2,5),(2,-5/2) c)(-1/2,-5/2),(2,5)**** d)(1/2,5/2),(2,5) 2. How many real number solutions are there to the equation 0=-3x^2+x-4? a)0 ***** b)1 c)2 d)3 3.solve

    asked by Kendra on March 19, 2015
  2. Algebra

    1.Solve the system of equations. y = 2x^2 - 3 y = 3x - 1 a. no solution b. (-1/2, 5), (2, -5/2) c. (-1/2, -5/2), (2,5) d. (1/2, 5/2), (2, 5) 2.how many real number solutions does the equation have 0 = -3x^2 + x - 4 a. 0 b. 1 c. 2

    asked by Gameknight on March 19, 2020
  3. Math

    Lesson 8: Systems of Linear and Quadratic Equations Check my work 1. Solve the system of equations. y = 2x^2 - 3 y = 3x - 1 a. no solution b. (-1/2, 5), (2, -5/2) c. (-1/2, -5/2), (2,5)*** d. (1/2, 5/2), (2, 5) 2.how many real

    asked by Gameknight on March 19, 2020
  4. Algebra Quadratic Equations

    What are the pros and cons of completing the square as a way to solve quadradic equations?

    asked by Marysvoice on February 15, 2008
  5. Algebra

    Use the quadratic formula to solve the equation. Give exact answers: 2x^2 -1 = 6x. The choices are: a) -3 + square root(7)/2, -3 - square root(7)/2 b) 3 + square root(11)/2, 3 - square root(11)/2 c) 3 + square root(7)/2, 3 -

    asked by Hope on June 3, 2009
  1. Algebra 1

    Solve the quadratic equation by completing the square. 4x2 + 2x - 7 = 0 A) x = 1 ± square root of 29/4 B) x = −1 ± square root of 29/4 C) x = −1 ± square root of 29/8 D) x = −1 ± square root of 29/16 Please help me!

    asked by Please Help on April 7, 2020
  2. Math

    Methods: Factoring, completing the square, quadratic formula. for these equations: 1. x^2 - x = 6 2. -2x^2 + 5x - 3 = 0 3. 3x^2 + x + 1 = 0 4. 2x(x - 5) = -12 is there any reason to chose one method over the other to solve the

    asked by anonymous on September 2, 2018
  3. Algebra

    I really need help on some sample work. Just need to check my answers: 1. Describe how the graph of y=-x^2+1 differs from y=x^2. Then find the axis of symmetry and the vertex 2. Graph the quadratic equation y=x^2+x-2. Identify the

    asked by Connor Steelwood on March 22, 2019
  4. 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.

    asked by Charly on June 2, 2011
  5. Math

    Solve the Following quadratic equations by completing the square. 7x(squared)+4x-13=8

    asked by Emir on August 2, 2012
  6. algebra

    Quadratic equations can be solved by graphing,using the quadratic formula, completing the square, and factoring. What are the pros and cons of the methods. when would each be appropriate?

    asked by debby on February 7, 2012

You can view more similar questions or ask a new question.