Question

Express 4 x square + 12 X Y + 9 y square and evaluate the value x is equal to minus 2 Y is equal to 2

Answer 1

Hey !!! ^_^

Here is your answer

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$\: {(4x)}^{2} + 12xy + {9y}^{2} \\ \\ as \: given \: the \: value \: of \: x = - 2 \: \\ and \: y = 2 \\ \\ = {4.( - 2)} ^{2} + 12 \times ( - 2)(2) + {9 \times (2) }^{2} \\ \\ = 16 - 48 + 36 \\ \\ = 52 - 48 \\ = 4 \\ = {2}^{2}$


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