Find the value of $2 p^{2} q - 3 p q^{2} + 2 p - 3 q + 1$ when $p = 3, q = - 3$ .

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Solution

Given that,
$2 p^{2} q - 3 p q^{2} + 2 p - 3 q + 1$
$p = 3. q = - 3$
$= 2 {(3)}^{2} (- 3) - 3 (3) {(- 3)}^{2} + 2 (3) - 3 (- 3) + 1$
$= - 54 + 81 + 6 + 9 + 1$
=43
Then,
We get values of given equation is $43$ .

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