Question

Find the value of 7p 2 q – 6pq 2 when p = 1, q = -2

Answer 1

Answer:

- 38

Step-by-step explanation:

p = 1, q = -2,

Then

$7 {p}^{2} q - 6p {q}^{2}$

$= 7 \times {1}^{2} \times ( - 2) - 6 \times 1 \times {( - 2)}^{2}$

$= - 14 - 24$

$= - 38$

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Answer 2

Step-by-step explanation:

here, p= 1

q= -2

7p²q-6pq²

= pq(7p-6q)

=1×-2(7×1 - 6×-2)

=-2(7+12)

=-2×19

=-38