Question

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x²-2x+1=0

Answer 1

$x^2-2x+1=0\\\\\large\text{usando:}\\\\\boxed{\boxed{a^2-2ab+b^2=(a-b)^{2}}}\bigstar\\\\\large\text{temos:}\\\\x^2-2x\cdot1+1^2\\\\(x-1)^{2}=0\\\\x-1=0\\\\\boxed{\huge{\blue{x=1}}} \huge \blue\checkmark$