Question 1165419

Factor completely or state that the polynomial is prime.

25x^2 + 30x - 36

Find the value of the integer k so that the trinomial is a perfect square trinomial, and write the factored form.

49y^2 - 42y + k,

Thank you
<pre>25x<sup>2</sup> + 30x - 36 <b><====== PRIME</b>

49y<sup>2</sup> - 42y + k
You can complete the square in order to get the value of k, or use the standard form of a perfect square, them EQUATE terms to find k.
Using either, {{{highlight_green(matrix(1,3, k, "=", 9))}}}