Question

Simplify :- (2.5p - 1.5q)^2 - (1.5p - 2.5p)^2 please explain with which no we multiply and using what identity

Answer 1

Answer:

4p^2 - 4q^2

Step-by-step explanation:

(2.5p  - 1.5q)^2 - (1.5p - 2.5q)^2

=> 6.25p^2  - 7.5pq + 2.25q^2 - 2.25p^2 + 7.5pq - 6.25q^2

=> 6.25p^2 - 7.5pq + 2.25q^2 - 2.25p^2 + 7.5pq - 6.25q^2

=> (6.25p^2 - 2.25p^2) + (-7.5pq + 7.5pq) + (2.25q^2 - 6.25q^2)

=> 4p^2 - 4q^2