Math, asked by sagarraj3475, 10 months ago

second term of the AP if its Sn=n^2+2n is .............​

Answers

Answered by Sidharth008
16

Answer:

a2=5

Step-by-step explanation:

by putting n=1

S1=1^2+2(1)

S1=3

S1=a1

a=3

now,by putting n=2

S2=2^2+2(2)

S2=4+4=8

S2=a1+a2

8=3+a2

a2=5

Answered by aakashshaw305
0

Answer:

The second term of the AP is 5

Explanation:

S_n=n^2+2n

Substituting the value n=1, we get

S_1=1^2+2*1\\a_1=3

Substituting the value n=2, we get

S_2=2^2+2*2\\S_2=8

S_2=a_1+a_2\\8 = 3+a_2\\a_2 = 5

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The process of adding two or more things together is called addition. The process of computing the sum of two or more numbers in mathematics is called addition. It is a fundamental mathematical procedure that is frequently used in daily life. When we work with money, figure out our food bills, or figure out the time, we frequently employ addition. One-digit numbers can be added simply for solving addition problems, however for bigger numbers, we divide the numbers into columns using their corresponding place values, such as ones, tens, hundreds, thousands, and so on. Students learn basic addition sums in primary school, including one-digit facts, math addition sums, and double-digit math addition sums.

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