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kenneyfamily

  • 3 years ago

what number would complete the square? x^2-2x+6=0

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  1. kenneyfamily
    • 3 years ago
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    a)1 b)6 c)4 d)-1

  2. 03453660
    • 3 years ago
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    1

  3. kenneyfamily
    • 3 years ago
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    you sure?

  4. kenneyfamily
    • 3 years ago
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    @03453660

  5. 03453660
    • 3 years ago
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    yap

  6. 03453660
    • 3 years ago
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    want to know??

  7. kenneyfamily
    • 3 years ago
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    sure

  8. kenneyfamily
    • 3 years ago
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    @03453660

  9. 03453660
    • 3 years ago
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    ok

  10. 03453660
    • 3 years ago
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    your equation is x^2-2x+6=0 now take the constant to RHS x^2-2x = -6 look to LHS of this equation what should i add to make it perfect square like it become (a+b)^2 or (a-b)^2

  11. kenneyfamily
    • 3 years ago
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    ok

  12. 03453660
    • 3 years ago
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    so if i add 1 to LHS and RHS then LHS become a perfect square x^2-2x+1 = -6+1 (x-1)^2 = -5 this LHS has became a perfect square by adding 1 to it

  13. kenneyfamily
    • 3 years ago
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    got it!! thanks!!

  14. 03453660
    • 3 years ago
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    welcome! and sorry for the late reply i have some problem in internet connection

  15. kenneyfamily
    • 3 years ago
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    no worries..could you help me with one more please? x^2-4x-9=0 @03453660

  16. kenneyfamily
    • 3 years ago
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    a)9 b)-4 c)4 d)13

  17. 03453660
    • 3 years ago
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    this is 4

  18. 03453660
    • 3 years ago
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    did you know how to solve this. its a little bit tricky

  19. kenneyfamily
    • 3 years ago
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    ok i can try and figure it out! thank you :)

  20. 03453660
    • 3 years ago
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    you are wlcome

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