Multiple choice

Use the algebraic expression n2 + 3 to find the 21st term of the series.

  1. 256

  2. 343

  3. 396

  4. 444

  5. a
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D Correct answer
Explanation

The 21st term is found by substituting n=21 into n^2 + 3. 21^2 + 3 = 441 + 3 = 444.

AI explanation

The question provides the algebraic expression n2 + 3 to find the terms of the series. Substitute n = 21 into the expression to get 21 squared plus 3. This calculates to 441 + 3 = 444.

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