Algebra 2

posted by .

Find the value of c that makes the expression a perfect square trinomial. Then write the expression as the square of a binomial. I didn't really understand what that meant.

x^2-23x+c
x^2-(2/7)x+c

  • Algebra 2 -

    take half the middle term coefficient, square it

    x^2 - 23x + 526/4

    = (x- 23/2)^2

    looks like you learning the process of "completing the square"

    here is an easier one ...

    x^2 + 10x + c
    or
    x^2 + 10x + 25 ,,,,,(half of 10 is 5, 5^2 = 25)
    = (x+5)^2

    expand (x+5)^2 to see why this happens

    Now try your own second question and let me know what you got for c .

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math,help

    Is this trinomial a perfect square x^2-6x+9 if the trinomial starts with x^2 and 1/2 of the middle term coefficient squared equals the last term, then it is a perfect square. tell me what you found. i thought it was not a perfect square. …
  2. algebra

    I am confused on how to determine if an equation/expression is a trinomial square. For example c^2(squared)-18c+81. I know that this is a trinomial square but I don't know why. Could someone please help me understand better
  3. Algebra 1

    m(squared)-8m+n Find the value on n such that each expression is a perfect square trinomial.
  4. algebra

    FIND THE VALUE OF K, SO THAT THE EXPRESSION IS A PERFECT SQUARE TRINOMIAL. x^2+6x+k k=
  5. Algebra

    What is the value of n so that the expression x² + 11x + n is a perfect square trinomial?
  6. Alg 1

    Completing the square: Find the value of c such that each expression is a perfect-square trinomial. p^2 - 11p + c Is the answer 30.25?
  7. Algebra 1

    1. What is the excluded value for the rational expression x^2 - 4/3x - 6?
  8. Math

    The value of k that makes the expression x^2 + 72x +k a perfect square trinomial is ?
  9. algebra 2

    find the value of c that makes each trinomial a perfect square. then write the trinomial as a prefect square. x^2-10x+c x^2+60x+c
  10. Algebra 1

    What is the value of n so that the expression x^2+11x+n is a perfect square trinomial?

More Similar Questions