4x² + 6xy - y² when x = 4 and y = 6

Pesulap asked Jul 3, 2023

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Pesulap asked Jul 3, 2023

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20 votes

Solution

We want to evaluate 4x² + 6xy - y² when x = 4 and y = 6

$\begin{gathered} =4(4)^2+6(4)(6)-(6^2) \\ =4(16)+144-36 \\ =64+144-36 \\ =172 \end{gathered}$

The answer is 172

Pankaj Parashar answered Jul 6, 2023

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