Question

The sum of first n terms of an ap is given by n square + 8 and find the first term and common difference and also find the sum of first 50 terms

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

$S_{50}$= $n^{2} + 8$ = $50^{2} + 8 = 2500+ 8= 2508$

Step-by-step explanation:$S_{1} = 1^{2} +8= 9=a_{1}$

⇒$S_{2} =2^{2} +8=4+8=12$

⇒$S_{2} - S_{1} = a_{2} \\12-9=3=a_{2}$

$d=a_{2}-a_{1}=3-9=-6$

there u go

pls mark my ans as brainliest