+0  
 
0
29
1
avatar

Find the positive value of n such that the equation 9xˆ2+nx+1=0 has exactly one solution in x.

Guest Nov 30, 2018

Best Answer 

 #1
avatar+14578 
+3

If you use the quadratic formula to solve for this quadratic....you will see that when the term

  sqrt(b^2-4ac)   is equal to ZERO , you will have only ONE x root

 

so   n^2 - 4(1)(9) = 0       Solve for n

        n^2 = 36

       n = 6

ElectricPavlov  Nov 30, 2018
 #1
avatar+14578 
+3
Best Answer

If you use the quadratic formula to solve for this quadratic....you will see that when the term

  sqrt(b^2-4ac)   is equal to ZERO , you will have only ONE x root

 

so   n^2 - 4(1)(9) = 0       Solve for n

        n^2 = 36

       n = 6

ElectricPavlov  Nov 30, 2018

3 Online Users

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.