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zahabaha

  • 3 years ago

HOW WULD U FACTOR THIS :)) 10x2 − 7x − 3

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  1. NotTim
    • 3 years ago
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    Ok, what 2 numbers add to 7 and multiply to the last and first numbers?

  2. zahabaha
    • 3 years ago
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    4 and 3

  3. NotTim
    • 3 years ago
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    and multiply to 30?

  4. zahabaha
    • 3 years ago
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    um 3

  5. cwrw238
    • 3 years ago
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    you need to factor 10 and -3 and and combine them so multiplying and addingg will give -7

  6. NotTim
    • 3 years ago
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    When I say add, you can 'add' negative nubmers too

  7. zahabaha
    • 3 years ago
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    umm idk

  8. cwrw238
    • 3 years ago
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    10 * 1 1 * -3

  9. zahabaha
    • 3 years ago
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    oh ok then wat do i do

  10. cwrw238
    • 3 years ago
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    |dw:1344725357896:dw|

  11. cwrw238
    • 3 years ago
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    the 10 * -1 and 1 * +3 so its (10x + 3)(x - 1)

  12. zahabaha
    • 3 years ago
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    can u like show me step by step under eachother without drwing

  13. cwrw238
    • 3 years ago
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    well - this is the way i do it you have to consider the possibilities 10 could factor to 5 * 2 or 10 * 1 and -3 could be 1 * -3 or -1 * 3 so you have to try out different combinations so as to obtain -7 (the middle term) thats how i got 10*1 and 1 * -3 - these factor to the form (ax + b)(cx + d) and adx + bcd is the middle term thats how the result is (10x - 3)(x + 1) the (10 * 1) + (-3 * 1) gives the -7

  14. cwrw238
    • 3 years ago
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    these are a bit tricky - and need some practice before you get proficient

  15. zahabaha
    • 3 years ago
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    8x2 − 11x + 3

  16. zahabaha
    • 3 years ago
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    how uld i factor this one

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