Select all the expressions that can be factored into a squared binomial.

a. y^2+2y+1
b. w^2+5w+25/4
c. y^2-10y+5
d. x^2-10x+25
e. x^2+10x+25
f. w^2+20w+40

a. y^2+2y+1

d. x^2-10x+25
e. x^2+10x+25

also B: w^2+5w+25/4 = (w + 5/2)^2

You are correct! I apologize for missing that.

b. w^2+5w+25/4