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mikaa_toxica13

  • 2 years ago

Identify the factors of x2 − 4x − 12. (x + 4)(x − 3) (x − 4)(x + 3) (x − 2)(x + 6) (x + 2)(x − 6)

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  1. skullpatrol
    • 2 years ago
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    Any ideas?

  2. mikaa_toxica13
    • 2 years ago
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    D ?

  3. skullpatrol
    • 2 years ago
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    Why?

  4. mikaa_toxica13
    • 2 years ago
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    well i asked my teacher and she was it was the answer.

  5. mikaa_toxica13
    • 2 years ago
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    shes not good at explaining though

  6. skullpatrol
    • 2 years ago
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    Hmm..

  7. skullpatrol
    • 2 years ago
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    Let's do it together: Multiply the first terms of the binomials, what do you get?

  8. mikaa_toxica13
    • 2 years ago
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    the binomials are 2 and 4 right ? or by terms u mean x and y ?

  9. skullpatrol
    • 2 years ago
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    $$(x + 2)$$is one binomial and$$(x − 6)$$is another binomial. Each of x, 2 and -6 are called terms.

  10. skullpatrol
    • 2 years ago
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    A monomial is an expression that is either a numeral, a variable or the product of a numeral and one or more variables.

  11. skullpatrol
    • 2 years ago
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    In the expression a + b a and b are called terms

  12. mikaa_toxica13
    • 2 years ago
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    oh okay thank u :) so then what ?

  13. skullpatrol
    • 2 years ago
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    Multiply the first terms of the binomials, what do you get?

  14. skullpatrol
    • 2 years ago
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    $$(x + 2)(x − 6)$$ hmm?

  15. skullpatrol
    • 2 years ago
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    |dw:1363720290995:dw|

  16. skullpatrol
    • 2 years ago
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    Then multiply the first term of each binomial by the last term of the other and add these products.

  17. mikaa_toxica13
    • 2 years ago
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    soo sorry. i had to go offline for a while

  18. skullpatrol
    • 2 years ago
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    and finally, multiply the last terms of the binomials.

  19. skullpatrol
    • 2 years ago
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    By following these steps you will see that $$(x + 2)(x − 6)=x^2 − 4x − 12$$

  20. mikaa_toxica13
    • 2 years ago
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    oh okay. thank u !!

  21. skullpatrol
    • 2 years ago
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    np :)

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