Question

Two sets of quadratic expressions are shown below in various forms:

Line 1: x2 + 3x + 2 (x + 1)(x + 2) (x + 1.5)2 − 0.25
Line 2: x2 + 5x + 6 (x + 2)(x + 3) (x + 2.5)2 + 6.25

Which line contains three equivalent expressions?

Line 1 only

Line 2 only

Both Line 1 and Line 2

Neither Line 1 nor Line 2

Answer 1

help needed

Answer 2

expand or factorise the second and third of each line to see whether they are equal to the first.
Let me do the first line:
(x+1)(x+2)=x^2 + 2x + x + 2 = x^2+3x+2
(x+1.5)^2 - 0.25= (x+1.5+0.5)(x+1.5-0.5)=(x+2)(x+1)
So the first line is correct.
For the third term I factorise instead of expanding.