Question

subtract 3pq (p-q )from 4pq (p+q)

Answer 1

$4pq(p + q) - 3pq(p - q) \\ = 4 {p}^{2} q + 4p {q}^{2} - 3 {p}^{2} q + 3p {q}^{2} \\ = {p}^{2} q + 7p {q}^{2} \\ = pq(7q + 1)$
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Answer 2

Sollotion = 4pq(p+q)-{3pq(p-q)}

=4p(square)q+4pq(square)-3pq(p+q)

=4p(square)q+4pq(square)-3p(square)q-3pq(square)

=4p(square)q-3p(square)q+4pq(square)-3pq(square)

= 1p(square)q+1pq(square)