Determine the oblique asymptote of the graph of the function. \( g(x)=\frac{x^{2}+4 x-2}{x+3} \)
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To find the oblique asymptote of the function \( g(x) = \frac{x^{2} + 4x - 2}{x + 3} \), we perform polynomial long division. Dividing \( x^2 + 4x - 2 \) by \( x + 3 \): 1. Divide the leading terms: \( \frac{x^2}{x} = x \). 2. Multiply \( x \) by \( x + 3 \) to get \( x^2 + 3x \). 3. Subtract: \[ (x^2 + 4x - 2) - (x^2 + 3x) = x - 2. \] 4. Now divide \( x - 2 \) by \( x + 3 \): \[ \frac{x - 2}{x + 3} \quad \text{(This term approaches 0 as } x \to \infty\text{)}. \] The long division gives us: \[ g(x) = x + \frac{x - 2}{x + 3}. \] Thus, as \( x \to \infty \), \( g(x) \) approaches \( x \). Hence, the oblique asymptote is \( y = x \).