SOLUTION: Find the discriminant. Then use it to deteremine the number and type of solutions. 1.) m^2-4m-4=0 2.) 6y^2=4y-7 Thank you for your help!!!

Algebra ->  Real-numbers -> SOLUTION: Find the discriminant. Then use it to deteremine the number and type of solutions. 1.) m^2-4m-4=0 2.) 6y^2=4y-7 Thank you for your help!!!      Log On


   

Question 45993: Find the discriminant. Then use it to deteremine the number and type of solutions.
1.) m^2-4m-4=0
2.) 6y^2=4y-7
Thank you for your help!!!
Answer by Nate(3500) About Me  (Show Source):
You can put this solution on YOUR website!
Discriminant: b%5E2+-+4ac
1.) m^2 - 4m - 4 = 0
b%5E2+-+4ac
16+%2B+16
32
Since the discriminant is positive, you will have two real roots.
+graph%28600%2C600%2C-10%2C10%2C-10%2C10%2Cx%5E2-4x-4%29+
2.) 6y^2 = 4y -7
6y^2 - 4y + 7 = 0
b%5E2+-+4ac
16+-+168
-152
Since the discriminant is negative, your roots are imaginery.
+graph%28600%2C600%2C-10%2C10%2C-10%2C10%2C6x%5E2-4x%2B7%29+