Question

simplify -pqr(p2+q2+r2)​

Answer 1

Answer:

(p

2

+q

2

−r

2

)−(2pq)

2

=(p

2

+q

2

−r

2

+2pq)(p

2

+q

2

−r

2

−2pq)

=(p

2

+q

2

+2pq−r

2

)(p

2

+q

2

−2pq−r

2

)

=[(p+q)

2

−r

2

][(p−q)

2

−r

2

]

=(p+q+r)(p+q−r)(p−q+r)(p−q−r)