Answer:
d=0; discriminant equals zero
this means there is one real root for the equation
Step-by-step explanation:
the discriminant is d=b^2-4ac
so we can write our equation in the format to subsitute
ax^2+bx+c=0
x^2 = 4x - 4
so...
1x^2 - 4x + 4 = 0
so
a= 1
b=-4
c=4
now subsitute
d= b^2-4ac
d= -4^2-4(1)(4)
d=16-16
d=0
The discrimant equals zero.
when the discriminant equal zero we know that there is one real root for the equation.
hope this helped!
