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Question
is the following equation quadratic?
\[\left( x + 2 \right)^2 = 2 x^2\]
Sum
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Solution
\[\left( x + 2 \right)^2 = 2 x^2\]
\[\Rightarrow x^2 + 4 + 4x = 2 x^2 \]
\[ \Rightarrow x^2 - 4x - 4 = 0\]
It is in the form of a quadratic equation.
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