Question

find the value when p=1 and q=2
Зр2 +7pq2 - pq​

Answer 1

Answer:

= 3p2 + 7pq2 -pq

=312 + 7122 - 12

=7434 - 12

= 7422

Step-by-step explanation:

Answer 2

Given:

• P = 1 ... (1)

• q = 2 ... (2)

To Find:

• $3{p}^2 + 7p{q}^2 - pq$ .... (3)

Solution:

Put equation (1) and (2) in equation (3)

• $3{(1)}^2 + 7(1)(2{)}^2 - (1)(2)$

• $3(1) + 7(1)(4) - (1)(2)$

• $3 + 7(4) - 2$

• $3 + 28 - 2$

By applying DMAS

• $31 - 2$

• $29$