1 Deepak BoraNewbie Asked: July 26, 20202020-07-26T21:56:03+05:30 2020-07-26T21:56:03+05:30In: CBSE Find the zeroes of the quadratic polynomial 7y² – 11/3 y – 2/3 and verify the relationship between the zeroes and the coefficients. 1 CBSE 10th Class past year question paper Year 2019 SET 1, Code Number- 30/2/1 Question number – 21 (b) cbse 10th classncert class 10thprevious year paper Share Facebook 1 Answer Voted Oldest Recent Deepak Bora Newbie 2020-07-28T21:47:10+05:30Added an answer on July 28, 2020 at 9:47 pm p(y) = 7y² – (11/3)y – 2/3 = 1/3 (21y² – 11y – 2) = 1/3 [(7 y 1)(3y – 2)] ∴ Zeroes are 2/3, –1/7 Sum of zeroes =(2/3) – ( 1/7) = -2/21 -b/a = 11/21 ∴ sum of zeroes = -b/a Product of zeroes = (2/3) – ( 1/7) = – 2/21 c/a = – (2/3) (1/7) = – 2/21 ∴ Product =c/a 0 Reply Share Share Share on Facebook Share on Twitter Share on LinkedIn Share on WhatsApp Leave an answerLeave an answerCancel reply Featured image Select file Browse Add a Video to describe the problem better. Video type Youtube Vimeo Dailymotion Facebook Choose from here the video type. Video ID Put Video ID here: https://www.youtube.com/watch?v=sdUUx5FdySs Ex: "sdUUx5FdySs". Click on image to update the captcha. Save my name, email, and website in this browser for the next time I comment. Related Questions The diameter of a circle is 10 cm. Find the length of the arc, when the corresponding central ... A cylindrical vessel with internal diameter 10 cm and height 10.5 cm is full of water. A solid ... A solid metallic sphere of diameter 28 cm is melted and recast into a number of smaller cones, ... A milk container is made of metal sheet in the shape of frustum of a cone whose volume ... A bucket is in the form of a frustum of a cone with a capacity of 12308.8 cm³ ...
p(y) = 7y² – (11/3)y – 2/3
= 1/3 (21y² – 11y – 2)
= 1/3 [(7 y 1)(3y – 2)]
∴ Zeroes are 2/3, –1/7
Sum of zeroes =(2/3) – ( 1/7)
= -2/21
-b/a = 11/21
∴ sum of zeroes = -b/a
Product of zeroes = (2/3) – ( 1/7)
= – 2/21
c/a = – (2/3) (1/7)
= – 2/21
∴ Product =c/a