hannahgrace199
hannahgrace199 hannahgrace199
  • 21-10-2017
  • Mathematics
contestada

Determine the type and number of solutions of −4x^2 − 4x − 1 = 0

Help me please, I'm extremely behind in math

Respuesta :

chi3fcomm5nd
chi3fcomm5nd chi3fcomm5nd
  • 21-10-2017
The question is about types and number of soultions so you must use b^2-4ac which is the experssion under the root in the quadratic formula
so
if
b^2-4ac=0 then there is one real soultion
if
b^2-4ac<0 then there are two imaginary soultions that differ in the sign between them
if
b^2-4ac>0 then there are two real soultions
so a polynomial is written in the form
ax^2+bx+c=0
so a=-4
b=-4
c=-1
so b^2-4ac=16-16=0
so one real soultion is the answer you are looking
type:real
number:1
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