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help_people

  • one year ago

Some steps to rewrite the expression x3 − 4x + x2 − 4 as a product of three factors are shown below: Step 1: x3 − 4x + x2 − 4 Step 2: x3 + x2 − 4x − 4 Step 3: x2(x + 1) − 4(x + 1) Which of the following best shows the next two steps to rewrite the expression? Step 4: (x2 − 4)(x + 1); Step 5: (x − 2)(x + 2)(x + 1) Step 4: (x2 + 4)(x + 1); Step 5: (x + 2)(x + 2)(x + 1) Step 4: (x2 − 4)(x + 1); Step 5: (x + 2)(x + 2)(x + 1) Step 4: (x2 + 4)(x + 1); Step 5: (x − 2)(x + 2)(x + 1)

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  1. amistre64
    • one year ago
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    what do you consider for step 4?

  2. help_people
    • one year ago
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    a or d @amistre64

  3. amistre64
    • one year ago
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    there are no labels on those ...

  4. amistre64
    • one year ago
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    if we factor out the common factor from step 3, what are we left with?

  5. help_people
    • one year ago
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    (x^2 + 4)(x+1)

  6. amistre64
    • one year ago
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    hmm, x^2(x+1) -4 (x^2+1) ^^^ ^^^ looks to me like we would be left with (x^2 -4), not the +4

  7. help_people
    • one year ago
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    oh srry

  8. help_people
    • one year ago
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    so a ?

  9. amistre64
    • one year ago
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    now, how would you consider factoring that (x^2-4) ? yes, since -2(2) = -4

  10. help_people
    • one year ago
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    ok could you chceck you one more for me?

  11. amistre64
    • one year ago
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    in a minute, im almost done on another post. but go ahead and post it

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