Find $\lim _ { x \rightarrow + \infty } f ( x )$ and $\lim _ { x \rightarrow - \infty } f ( x )$ . If the limiting value is infinite indicate whether it is +$\infty$ or -$\infty$.f (x) = (4 - x)(x + 5)

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The Answer of Find $\lim _ { x \rightarrow + \infty } f ( x )$ and $\lim _ { x \rightarrow - \infty } f ( x )$ . If the limiting value is infinite indicate whether it is +$\infty$ or -$\infty$.f (x) = (4 - x)(x + 5)

Find lim⁡x→+∞f(x)\lim _ { x \rightarrow + \infty } f ( x )limx→+∞​f(x)

Find $\lim _ { x \rightarrow + \infty } f ( x )$