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9y²-12y+4

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9y²-12y+4

Posted by Harshit Rajput 5 years, 2 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years, 2 months ago

9y² - 12y + 2 = 0
(3y)² - 2(3y)(2) + 2² - 2² + 2 = 0
(3y - 2)² - 4 + 2 = 0
(3y - 2)² = 2
(3y - 2) = √2
taking (+ve)
3y = √2 + 2
y = (√2 + 2)/3

taking (-ve)
3y = -√2 + 2
y = (2 - √2)/2

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Posted by Kanika . 4 days, 20 hours ago

CBSE > Class 10 > Mathematics