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8x=-4-4x^2 x= is what

User Buttafly
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1 Answer

4 votes

We have the equation:


8x=-4-4x^2

We want to find the values of x that satisfy the equation.

We can see the equation corresponds to a parabola, and this is the equation of the roots, so re write the equation in the standard form and find the roots:


\begin{gathered} 0=-4x^2+8x-4 \\ \text{Dividing all by -4:} \\ 0=x^2-2x+1=(x-1)^2 \end{gathered}

So the equation above has a solution when x=1, and it's the unique solution.

User Michael Copeland
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