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Haleyy_Bugg

  • 3 years ago

Factor completely: 10x^2 + 2x − 8 A) 2(5x − 1)(x + 4) B) 2(5x − 4)(x + 1) C) 2(5x + 2)(x − 2) D) 2(5x − 2)(x + 2)

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  1. Haleyy_Bugg
    • 3 years ago
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    @Notamathgenius

  2. JULIANCHICO
    • 3 years ago
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    2(x+1)(5x-4)

  3. goformit100
    • 3 years ago
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    its easy, do you know the basics of quadratic Expression.

  4. cwrw238
    • 3 years ago
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    first divide by 2 = 2(5x^2 + x - 4)

  5. Haleyy_Bugg
    • 3 years ago
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    Then what?

  6. goformit100
    • 3 years ago
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    Dont just kee on giving answering directly

  7. Haleyy_Bugg
    • 3 years ago
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    @Nurali

  8. cwrw238
    • 3 years ago
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    then you need to factor the quadratic 5x^2 + x - 2 have you done these in class yet?

  9. Haleyy_Bugg
    • 3 years ago
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    no its a 5 question pretest. Im not allowed to look ahead and get the gist of anything until I do my pretest.

  10. cwrw238
    • 3 years ago
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    well you can try expanding each of the options util you get the original expression can you you work out (5x - 2)(x + 1) using the distributive law ?

  11. Haleyy_Bugg
    • 3 years ago
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    I dont know.

  12. JULIANCHICO
    • 3 years ago
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    the answers is B

  13. cwrw238
    • 3 years ago
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    well you multiply the second bracket by 5x then by - 2: = 5x(x + 1) - 2(x + 1) can you do that?

  14. cwrw238
    • 3 years ago
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    can you continue from there?

  15. cwrw238
    • 3 years ago
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    @julianchico - its best not to just give the answer - but to explain how to get the answer - otherwise there is little benefit to the questioner.

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