+0  
 
0
94
2
avatar

whats the discriminant, number, and type of solution to -4n²-n-6=0

Guest May 23, 2017
Sort: 

2+0 Answers

 #1
avatar+77149 
+1

-4n²-n-6=0

 

The discriminant is given by  b^2 - 4ac  =   (-1)^2 - 4(-4)(-6)  =  1 - 96  = -95

 

A discriminant < 0    means that we have non-real solutions

 

 

 

cool cool cool

CPhill  May 23, 2017
 #2
avatar
0

a = -4

b = -1

c = -6

 

The discriminant is always b2 - 4ac, so it's:

   (-1)2 - 4(-4)(-6)

= 1 - 4(24)

= 1 - 96

= -95

 

If the discriminate is <0, the quadratic formula becomes unsolvable, which means there are no values of n which satisfy this equation.

 

A good resource to use is WolframAlpha when checking your answers for these problems.

Here is the site with this function as the input. You'll notice the graph never touches the x-axis which means that y can never equal zero and the problem has no solution.

https://www.wolframalpha.com/input/?i=-4n%C2%B2-n-6

Guest May 23, 2017

21 Online Users

avatar
avatar
avatar
avatar
avatar
avatar
We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. We also share information about your use of our site with our social media, advertising and analytics partners.  See details