The sum of three number in AP is 27 and their product is 405.find the common difference
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Answered by
0
Answer:d=±6
Step-by-step explanation:
a-d+a+a+d=27
a=9
81-d²=45
-d²=-36
d=±6
Answered by
1
let the terms be a+d ,a, a-d
a+d+a+a-d=27
3a=27
a=9
(a+d)(a)(a-d)=405
a^3-ad^2=405
substitute a=9
729-405=9d^2
324=9d^2
d^2=36
d=6
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