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anonymous

  • 5 years ago

t^2+15t+50 Factor the trinomial. I am not sure how to do this please help.

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  1. anonymous
    • 5 years ago
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    what are two numbers a and b so that: a*b=50 a+b=15 ?

  2. anonymous
    • 5 years ago
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    I got 5t^2(3t+10) and that was incorrect

  3. anonymous
    • 5 years ago
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    no that would multiply to 15t^3+50t^2

  4. anonymous
    • 5 years ago
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    so two numbers that multiply to 50 and add to 15 are 5 and 10. So we can factor the trinomial: (x+5)(x+10)

  5. anonymous
    • 5 years ago
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    does this make sense or should I explain why I did this?

  6. anonymous
    • 5 years ago
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    well that answer was not correct

  7. anonymous
    • 5 years ago
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    (t+5)(t+10) is correct

  8. anonymous
    • 5 years ago
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    ok I was putting x sry

  9. anonymous
    • 5 years ago
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    my fault i wrote x too

  10. anonymous
    • 5 years ago
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    t^2+15t+50 You must find a pair of factors of 50 that sum to 15 5 and 10 Now replace the 15t with 5t + 10t t^2+5t + 10t +50 now pair off and factorise... (t^2+5t) + (10t +50) giving ... t(t + 5) + 10(t + 5) answer = (t + 5)(t + 10)

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spraguer (Moderator)
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