Limits of polynomials

What this lesson shows

The limit, as x approaches 4, of x squared plus x plus 2. Limits sound like they need something clever. For a polynomial, they do not.

Try it yourself

Real questions from this lesson's worksheets — answers below each one.

1. Geometric sequence: first term 4, ratio 2. Find term 3
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   16
2. lim(x→1) (x² + x + 2)
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   4
3. lim(x→1) (x² + x + 1)
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   3
4. Geometric sequence: first term 1, ratio 2. Find term 2
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   2