Q. What is the number of quadratic equation which are unchanged by squaring their roots?
- 2
- 4
- 6
- None of these
Q. If equations aand have a common root, then a+4b+4c is equal to
- 0
- 1
- -1
- -2
Dear Student,
Please refer the following links for answer to your queries
Question 1
https://www.meritnation.com/ask-answer/question/find-the-no-of-quadratic-equations-which-are-unchanged-b/quadratic-equations/8836329
Question 2
https://www.meritnation.com/ask-answer/question/ax-2-2cx-b-0-and-ax-2-2bx-c-0-have-a-common-root-th/quadratic-equations/8996783
Regards,
Please refer the following links for answer to your queries
Question 1
https://www.meritnation.com/ask-answer/question/find-the-no-of-quadratic-equations-which-are-unchanged-b/quadratic-equations/8836329
Question 2
https://www.meritnation.com/ask-answer/question/ax-2-2cx-b-0-and-ax-2-2bx-c-0-have-a-common-root-th/quadratic-equations/8996783
Regards,