Respuesta :

If you'll simplify this equation -2x(-2-x)=x+1
you'll get 4x+2x²=x+1
simplify further 2x²+3x-1
this one looks like a quadratic equation.
Thus, this is not a linear equation,
konrad509
[tex]-2x(-2 -x) = x + 1\\ 4x+2x^2=x+1[/tex]

It's not linear. It's quadratic.

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