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The sum of three terms of an Ap is -3 & there product is 8. find Ap.

Posted by Surya Pratap Singh Chauhan 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Namrata Jindal 5 years, 3 months ago

Let the terms be (a-d), a, (a+d) Sum=3a=-3 So a=-1 Now, product = (a+d)a(a-d) = 8 (d-1) (-1) (-1-d) =8 (d-1) (-1-d) =-8 -d^2 +d -d +1=-8 d^2= 9 So d= -3 or 3 So AP will be -1, -4, -7'......... OR AP will be -1, 2,5

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CBSE > Class 10 > Mathematics