Question

Rico thinks it's a perfect square triinomiall. Teresa says it's the difference of two squares. Who is

correct. -9x2-30x-25

Answer 1

Answer: Rico is right.

(-1)(3x + 5)²

Step-by-step explanation: If it were the difference of two squares, the -30x would not be there.

It makes sense to factor out (-1) fry the trinomial, leaving all positive terms.

Then factor 9x² + 30x + 25 as

(3x + 5)²