this math tho

posted by .

31. Solve the equation by completing the square. Round to the nearest hundreth if necessary.

x^2 - 6x = 7

x = 7, 1
x = -7, 1
x = -7, -1
x = 7, -1

  • this math tho -

    x^2 - 6 x + (6/2)^2 = 7 + (6/2)^2

    x^2 - 6 x + 9 = 7 + 9

    (x-3)^2 = 16

    (x-3) = 4 or (x-3) = -4

    x = 7 or x = -1

    check
    1 + 6 = 7
    49 - 42 = 7

  • this math tho -

    okay thanks, I was thinking that.

  • this math tho -

    You are welcome :)
    No thinking, just doing and CHECKING

  • this math tho -

    okay...haha I'll do it...then check!! thanks Damon!

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math

    31. Solve the equation by completing the square. Round to the nearest hundredth if necessary. x2 – 6x = –8
  2. Math

    Solve the quadratic function y=2x^2-14x -16 by completing the square. Round roots to the nearest hundredth, if necessary. Show your work.
  3. Math Help!!!

    Solve the proportion. Round to the nearest hundreth, where necessary. 27/90=3/?
  4. Math Help!!!

    Solve the proportion. Round to the nearest hundreth, where necessary. 32/?
  5. Math Help

    Solve the proportion. Where necessary, round to the nearest hundreth. 9/10=x10 A.9 B. 90 C. 10 D. 1000 Is the answer A?
  6. Math Help

    Solve the proportion. Where necessary, round to the nearest hundreth. x/3=10/11 A. 9 B. 30 C. 2.73 D. 0.30 Is the answer C?
  7. 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?
  8. algebra

    Solve by completing the square;round to the nearest hundredth if necessary. x^2-3x=4 Thanks so much.
  9. Algebra

    solve the equation by completing the square. round to the nearest tenth. x^2+8x=10 A. 1.1, 9.1 B. 1.1, -9.1 C. -1.1, 9.1 D. -1.1,-9.1 my answer is A is that correct
  10. Algebra

    solve the equation by completing the square. round to the nearest tenth. x^2+8x=10 A. 1.1, 9.1 B. 1.1, -9.1 C. -1.1, 9.1 D. -1.1,-9.1 my answer is A is that correct

More Similar Questions