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anonymous

  • one year ago

Solve by using the perfect squares method. x2 + 8x + 16 = 0 A. –2 B. 4 C. –4 D. 2

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  1. anonymous
    • one year ago
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    @Nnesha

  2. anonymous
    • one year ago
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    isnt it -4

  3. anonymous
    • one year ago
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    thats what i got

  4. Nnesha
    • one year ago
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    how did you get -4 show your work :=)

  5. Nnesha
    • one year ago
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    solve by using the *perfect squares method* what waz your first step ? :=)

  6. anonymous
    • one year ago
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    sorry opn studys acting up

  7. anonymous
    • one year ago
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    See how the coefficient on x^2 is a perfect square? (it is 1, which is 1 squared). See also how the constant term is a perfect square? (it is 16, which is 4 squared). Notice also that if you take the coefficient on the middle term (8) and divide it by 2 (giving you 4) and then square it, you get the product of the 1 and the 16? (4 squared is 16) That tells us this trinomial is a perfect square. (x+4)^2 By the zero product property, we know that x+4=0, so x=-4

  8. Nnesha
    • one year ago
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    nice

  9. anonymous
    • one year ago
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    is it right

  10. Nnesha
    • one year ago
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    yep

  11. anonymous
    • one year ago
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    thanks

  12. Nnesha
    • one year ago
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    np

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