Find the value of the algebraic expression
$2 p^{2} + 5 q - 3$ at $p = - 4, q = - 7$

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Solution

The given expression is,
$2 p^{2} + 5 q - 3$
We need to find the value of the given expression at $p = - 4, q = - 7$
we have $2 p^{2} + 5 q - 3$
$\Rightarrow 2 p^{2} + 5 q - 3 \Rightarrow 2 (- 4) + 5 (- 7) - 3 \Rightarrow - 8 - 35 - 3 \Rightarrow - 46$
Thus, the value of the given expression
at $p = - 4, q = - 7$ is $= - 46$

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