Fill in the blank spots x^2+8x+3=0

Step 1: x^2+8x+__ )+ 3___=0
Step 2: (x^2+__ )^2=
Step 3: (x+___ )^2=

16 , step 2 is written incorrectly but I think they want it to be 4 & 19, step 3 is 4 & 19. BTW this is a poorly written question!

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.