Which trinomial is a perfect-square trinomial?

A. 9y^2-6y+4
B. 2y^2-2y-1
C. 10y^2-20y-4
D. 4y^2-4y+1

I'll do the first one for you. it isn't very hard at all.on number one, you have (50 × 3), which equals 150, and (3 × 3), which equals 9. after you establish that, you add 150 and 9 together. so, (150 + 9) equals 159.this means that 53 × 3 = 159.

The answer is 49/16 or 3 1/16