Question

plz give me full answer and don't give silly answers plz​

Answer 1

The answer is "4p^2 - 4q^2"

Step-by-step explanation:

(2.5p - 1.5q)^2 - (1.5p- 2.5q)^2

This is in the form of a^2 - b^2.

so, a^2 - b^2 = (a+b)*(a-b)

       =(2.5p - 1.5q + 1.5p - 2.5q) * [2.5p - 1.5q -(1.5p - 2.5q)]

       =(2.5p - 1.5q + 1.5p - 2.5q) * [2.5p - 1.5q - 1.5p + 2.5q]

       =( 4p - 4q) * ( p + q )

       = 4p^2 + 4pq - 4q^2 - 4pq

       = 4p^2 - 4q^2.

(2.5p - 1.5q)^2 - (1.5p - 2.5q)^2 = 4p^2 - 4q^2.