Evaluate \displaystyle\lim{x\to -1}(x^3 + 2x^2 - 4).

-3 Polynomial is continuous; substitute: (-1)^3 + 2(1) - 4 = -1 + 2 - 4 = -3.

Determining Limits Using Algebraic Properties

AP Calculus AB· difficulty 1/5

\displaystyle\lim_{x\to -1}(x^3 + 2x^2 - 4)

Explanation

(-1)^3 + 2(1) - 4 = -1 + 2 - 4 = -3

Want 10 more like this — adaptive to your weak spots?