Question

Use the discriminant to describe the roots of each equation. Then select the best description. x^2-4x+4=0

double root
real and rational roots
real and irrational roots
non real roots

Answer 1

D the discriminant = b^2 - 4ac for the equation ax^2 + bx + c = 0

For x^2 - 4x + 4 D = (-4)^2 - 4*1*4 = 0

There will be a double root
They will also be real and rational