7.The sum of three numbers in an AP is -3 and their product is 8 .Find the numbers.
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Step-by-step explanation:
let let the three numbers in AP be a b c respectively show a-d +a+a+d= -3
a= -1
a(a-d) (a+d) = 8
a(a square - d square ) = 8
-1 ( 1 - d square) = 8
1 - d square = -8
d square = 1+8
d square = 9
d = +or - 3
when d =3 then -4 ,-1 ,+2
when d= -4 then +2,-1,-4
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