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anonymous

  • one year ago

Solve 2x2 = 72. A.{±18} B.{±36} C.{±6} D.{±8}

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  1. anonymous
    • one year ago
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    @Nnesha

  2. anonymous
    • one year ago
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    @jagr2713

  3. anonymous
    • one year ago
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    @paki

  4. anonymous
    • one year ago
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    @Nnesha

  5. anonymous
    • one year ago
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    @jagr2713

  6. Nnesha
    • one year ago
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    first solve for x^2 move 2 to the right side

  7. anonymous
    • one year ago
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    ok

  8. Nnesha
    • one year ago
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    let me know what you get after that

  9. anonymous
    • one year ago
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    ok hld on

  10. anonymous
    • one year ago
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    ok so are we moving 2 this way 72*2x?

  11. Nnesha
    • one year ago
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    2 is multiplying with x^2 so to cancel 2 from left side you should divide 2 both sides

  12. anonymous
    • one year ago
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    1*36

  13. anonymous
    • one year ago
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    so its B

  14. Nnesha
    • one year ago
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    how ?

  15. Nnesha
    • one year ago
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    x^2 =36 not x

  16. anonymous
    • one year ago
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    well 2/72=36 then 2/2=1*36=36

  17. Nnesha
    • one year ago
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    yes right so x^2 =36 now to cancel out 2 take square root both sides

  18. anonymous
    • one year ago
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    that would be 72 square root 36 by 2

  19. Nnesha
    • one year ago
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    nope |dw:1437429583966:dw| 72/2 is 36 so then there isn't any 72 to take square root of 72

  20. anonymous
    • one year ago
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    ok thanks

  21. Nnesha
    • one year ago
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    so what did you get ?

  22. anonymous
    • one year ago
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    idk yet

  23. Nnesha
    • one year ago
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    already take square root both sides let me know what you get

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