2x+3=x $x^{2}$ -1
You asked:
Given \(2 x + 3 = x\) evaluate the expression \({x}^{2} - 1\).
MathBot Answer:
\[x^{2} - 1 = 8\]
\[\begin{aligned}2 x + 3 &= x\\x &= -3\end{aligned}\]
By substituting this value into the expression, we find that: $$\begin{aligned}x^{2} - 1 &= -1 + \left(-3\right)^{2}\\&= 8\end{aligned}$$