Question

$if \: x = 2 + \sqrt{3} \: \: prove \: that \: {x}^{2} - 4x + 1 = 0$
please try it and help me
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Answer 1

Answer:

Here, use the identity

${(x + y)}^{2} = {x}^{2} + 2xy + {y}^{2}$

This is your answer

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