Which of the following is not a perfect square trinomial?

169 − 26y + y^2
81 + 18y + y^2
64 + 8y + y^2
25 + 10y + y^2

Question

Which of the following is not a perfect square trinomial?

       169 − 26y + y^2
       81 + 18y + y^2
       64 + 8y + y^2
       25 + 10y + y^2

anonymous · Answer

@Holly00d1248 @Agl202 @sleepyjess @Directrix @Destinymasha @Luigi0210 @Nnesha @mathmate

holly00d1248 · Answer

http://www.themathpage.com/alg/perfect-square-trinomial-2.htm this all i can do for you on this one

mathmate · Answer

A perfect square trinomial has the following properties:
1. the quadratic term and the constant term are both perfect squares, and have the SAME sign.
2. the middle (linear term) is TWICE the product of the square-root of the first and last terms.  The sign is irrelevant.
Examples:
$9x^2+12x+4$ is a perfect square because both $9x^2$ and 4 are perfect squares, and twice the product of the square-roots is 2(3x*2)=12x.
$3x^2+5x+16$ is not a perfect square because $3x^2$ is not a perfect square.
Test each of the given cases and decide which one is a perfect square trinomial.

anonymous · Answer

I got A?

anonymous · Answer

@mathmate

mathmate · Answer

A $is$ a perfect square.  Good work!
Question needs which one is $not$ a perfect square.
So you need to check everyone!

anonymous · Answer

Oh D?

anonymous · Answer

@mathmate