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Thread: I need to see how this equation is solved with work!!

  1. #1
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    I need to see how this equation is solved with work!!

    The question is Find the Value of 3a^2 - 4ab - 2b^2 when a= -1 and b= 4. I have tried so many different ways but I canít seem to get the answer which is -13. Help!!
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  2. #2
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    Re: I need to see how this equation is solved with work!!

    Quote Originally Posted by Eddyrodriguez View Post
    The question is Find the Value of 3a^2 - 4ab - 2b^2 when a= -1 and b= 4. I have tried so many different ways but I canít seem to get the answer which is -13. Help!!
    $\large 3(-1)^2-4(-1)(4)-2(-4)^2=3+16-32=~?$
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