Question

The sum of three numbers in AP is -3 and
their product is 8. Find the common
difference of an AP.​

Answer 1

Answer:

1. let, the three numbers are (A-d), (a) and (a+ d)
2. sum of this number =( a-d) + (a)+ (a+d)= -3

Step-by-step explanation:

1. 3a =-3
2. a= -1
3. and there product =( a-d )(a+ d)(a) = 8
4. (a²-d²)a=8. ( a²-b²)=( a+b )( a-b)
5. putting the value of a
6. (-1)²-(d²) = 8
7. 1-d²= 8
8. 1-8 = d²
9. √-7 = d