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Find the nth term of this quadratic sequence
2, 8, 18, 32, 50,

User Wiebke
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1 Answer

3 votes

Answer:

Explanation:

From the series, 2, 8, 18, 32, 50,...

By observation and by trial and error.

The first term, n = 1 = 2*1*1 = 2

Second term, n =2, = 2*2*2 = 8

Third, n =3, = 2*3*3 = 18

Third term, n = 4, = 2*4*4 = 32

Fourth term, n =5, 2 * 5* 5 = 50

For nth term, 2 *n *n = 2n²

Therefore nth term = 2n²

I hope this helps.

User Nicoli
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