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4x² + 6xy - y² when x = 4 and y = 6

4x² + 6xy - y² when x = 4 and y = 6
asked 106k views
1 vote
4x² + 6xy - y² when x = 4 and y = 6

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User Ian Colton
by
9.2k points

1 Answer

5 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

answered
User Vasyl Zhuryk
by
8.3k points
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