Question

Write down the 5th term in the sequence given by t(n) = n^2 +2n

Answer 1

Substitute n=5 in your equation....

Your sequence will become,

t(5)=5^2+2(5)

t(5) = 25+10=35

Answer 2

so it our equation would be t(5)=5^2+2(5)
25+10=35 :)