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Math Help - Find zeros of the function.. check my answers? f(x)= x^2+16x+62?

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    Find zeros of the function.. check my answers? f(x)= x^2+16x+62?

    f(x)= x^2+16x+62?

    I did the quadratic formula and got:

    -4, -12
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    Re: Find zeros of the function.. check my answers? f(x)= x^2+16x+62?

    No, your answers are not correct. A simple way to check is to "plug" in your answer for x in f(x) and see if f(x)=0, if it is true then the variable subbed in is a corresponding zero.

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    Re: Find zeros of the function.. check my answers? f(x)= x^2+16x+62?

    Quote Originally Posted by pita001 View Post
    f(x)= x^2+16x+62?

    I did the quadratic formula and got:

    -4, -12
    You do not show your work so how can we possibly tell where you made a mistake. Finding the zeroes of a quadratic using the quadratic formula is the right procedure, but clearly you did not apply the formula correctly.

    $(-\ 4)^2 + 16(-\ 4) + 62 = 16 + 62 - 64 = 14 \ne 0.$

    $(-\ 12)^2 + 16(-\ 12) + 62 = 144 + 62 - 192 = 14 \ne 0.$
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