Question

Find the 26th term of an ap whose sum to n terms is 2n2+2

Answer 1

a26 = a + 25d

2n^2 +2

if n = 1

a =4

if n = 2

a2 = 10

d = 10-4 = 6

a26 = a+25d

= 4+25×6

= 4+150

= 154

Answer 2

$here \: is \: your \: answer \: mate$

${n}^{th} term \: = {2n}^{2} + 2$

$a \: = \: 2( {1}^{2} ) + 2 \\ = 4$

$a2 = 2( {2}^{2} ) + 2 \\ = 10$

$d \: = a2 - a1 \\ = 10 - 4 \\ = 6$

$a26 = a + (n - 1)d \\ = 4 + (26 - 1)6 \\ = 4 + (25)6 \\ = 4 + 150 \\ = 154$

$so \: {26}^{th} term \: = 154$

$mark \: as \: brainlist$