Answer:
f(-∞) -∞
f(∞) = -∞
Step-by-step explanation:
f(x) = -8x^4 +3x^2 -7x
-----------------------
4x^2 -4
The -8x^4 / 4x^2 will dominate at infinity
f(x) can be approximated at ±∞ by -2 x^2
f(-∞) = -2(-∞)^2 = -2 *∞ = -∞
f(∞) = -2(∞)^2 = -2 *∞ = -∞
