The expression `y = ax^2+ bx + c` has always the same sign as of a if `(A) 4ac lt b^2 (B) 4ac...
2,048 views · Published 12 October 2018 · 2:00 · Indexed 23 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW The expression `y = ax^2+ bx + c` has always the same sign as of a if `(A) 4ac lt b^2 (B) 4ac gt b^2 (C) 4ac= b2 (D) ac lt b^2`
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