Math, asked by nimishanambiar18, 1 year ago

The sum of third and seventh term of an AP is 6 and the product is 8. Find the first term and common difference

Answers

Answered by megoyal78
4

Answer:


Step-by-step explanation:

3rd term =a+2d. -1

7th term =a+6d -2

Adding 1and 2

2a+8d=6

2(a+4d}=6

a+4d=3. -3rd equation. a+2d=3-2d

{a+2d}{a+4d+2d}=8

{a+2d}{3+2d}=8

{3-2d}{3+2d}=8

3^2-4d^2=8

-4d^2=-1

d^2=1/4

d=1/2

a+4×1/2=3

a+2=3

a=3-2=1

Similar questions