the sum of three numbers in A P is -3. and their product is 8,then find the common difference
A P means arithmetic progression
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a-d, a, a+d are in AP
sum=-3
a-d +a+a+d=-3
3a=-3
a= -1
product=8
(a-d) (a+d)a = 8
(a^2 -d^2)a =8
(1-d^2)-1 = 8
1-d^2= -8
d^2=1+8
d^2=9
d=3 is answer
sum=-3
a-d +a+a+d=-3
3a=-3
a= -1
product=8
(a-d) (a+d)a = 8
(a^2 -d^2)a =8
(1-d^2)-1 = 8
1-d^2= -8
d^2=1+8
d^2=9
d=3 is answer
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