the sum of the first three number in an ap is 18 if the product of first and third team is 5 times the common difference find the three no.s
Sushmita611:
hey tum 10th me ho na
Answers
Answered by
4
Hey mate ☺
Latest question asked in CBSE Maths examination 2019
SoLuTiOn :
let a1= g-d
a2= g
a3=g+d
A.T.Q
g-d+g+g+d=18
3g=18
g=6
(g-d)(g+d)=5d
put g=6
a=1
b=5
c=-36
discriminat =
when d=4
terms are :
6-4=2
6
6+4=10
AP: 2,6,10...and so on
when d=-9
6-(-9)=15
6
6-9=-3
AP:15,6,-3...and so on
Hope it helps you ☺✌✌
Similar questions