Question

$$y=2x2+x-1$$

Answer

y=5*x-1

Solution


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Simplify  \(2x\times 2\)  to  \(4x\).
\[y=4x+x-1\]
Simplify  \(4x+x-1\)  to  \(5x-1\).
\[y=5x-1\]