Ask a Question

Find the value of m so that the quadratic equation mx(5x − 6) + 9 = 0 has two equal roots.

0 votes
451 views
in Maths by (98.9k points)
edited by
Find the value of m so that the quadratic equation mx(5x − 6) + 9 = 0 has two equal roots.

1 Answer

0 votes
by (98.9k points)
edited by
 
Best answer
5mx² - 6mx + 9 = 0

b² - 4ac = 0

⇒ (-6m)² - 4(5m)(9) = 0

⇒ 36m(m - 5) = 0

⇒ m = 0, 5 ;

rejecting m=0, we get m = 5

Related questions

0 votes
0 answers 71 views
For what value of k, are the roots of the quadratic equation kx (x – 2) + 6 = 0 equal?
asked Apr 2, 2022 in maths by Doubtly (98.9k points)
0 votes
1 answer 96 views
Solve the quadratic equation : x2 + 3x - 9 = 0 for x.
asked Jun 29, 2022 in Maths by Doubtly (98.9k points)

Doubtly is an online community for engineering students, offering:

  • Free viva questions PDFs
  • Previous year question papers (PYQs)
  • Academic doubt solutions
  • Expert-guided solutions

Get the pro version for free by logging in!

Most popular tags

jeemain geography-10th engineering physics semester 5 web computing

5.7k questions

5.1k answers

108 comments

557 users

Doubtly
...