Simplify Note ; In this case, ^ means to power
p^2 - 2pq + q ^2
over
p^3 - p{q^2} + {p^2}q - q^2

Step-by-step explanation:

(p-1)(p-1)

p(p^2-q^2) +q(p^2-q^2)

last one.

step-by-step explanation:

last one.

generally speaking, the others follow some sort of pattern that correlates to either linear (looks like a straight line) or sinusoidal (looks like an s).

the last one is just a random cloud of points that doesn't correlate to any particular known order.

step-by-step explanation:

the true ones are a b and d