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anonymous

  • 5 years ago

Complete the Square: t^2-9t PLEASE HELP , need the steps in doing this!

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  1. anonymous
    • 5 years ago
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    Look at the coefficient of the second term with the variable raised to a power of 1. Divide that coefficient by two. Now write (t-4.5)^2. To expand a binomial, you square the front term, multiple the two terms and double them and square the back. So if you notice if you do that, you get back t^2-9t. However, you also have to square the back giving you +4.5^2. You don't want that, you want the original equation, so all you have to do is subtract 4.5, so it's: (t-4.5)^2-4.5^2

  2. anonymous
    • 5 years ago
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    i don't get it.

  3. anonymous
    • 5 years ago
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    so i start out with t^2-9t

  4. anonymous
    • 5 years ago
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    my hw first says i want a completed trinomial....

  5. anonymous
    • 5 years ago
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    what part dont you understand, the process i did was completing the square which is what your homework wants

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