Question

9. The factorisation of 1 + p + q + r + pq+ qr + pr + pqr ?​

Answer 1

Answer:

p+q+r+pq+qr+pr+pqr+1

after factorising = (p+1)(q+1)(r+1)

Step-by-step explanation:

• pq+pqr+ qr+q+pr+p +r+1
• pq(1+r) + q(r+1)+ p(r+1)+ 1(r+1)
• (r+1)(pq+p+q+1)
• (r+1){p(q+1) + 1(q+1) }
• (r+1){ (q+1)(p+1) }
• (r+1)(p+1)(q+1). answer.

hope it helps