Use the discriminant to describe the roots of each equation. Then select the best description.

x2 - 4x + 4 = 0he discriminant to describe the roots of each equation. Then select the best description.

discriminant= b^2-4ac= (-4)^2-(4*1*4)= 16-16=0

this for d<=0, it means that the equation has double roots, i.e it is a perfect square

so x= 4/2=2

x2 - 4x + 4 = 0

double root

real and rational root

real and irrational root

imaginary root

thank you

i have ust done that...the equation has a double root...

i have just done that...the equation has a double root...

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