Question 1036289
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the square of a number is 1 more then twice the number. what is the number?
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<pre>
{{{x^2}}} = {{{1+2x}}}

This is a quadratic equation. Solving it gives two roots 

{{{x[1]}}} = {{{1+sqrt(2)}}},

{{{x[2]}}} = {{{1-sqrt(2)}}}. 


Both the roots satisfy the condition.
</pre>