SOLUTION: Help, I am so lost! Thanks in advance!! Find the x-intercepts. y = x^2 – 4x + 4

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: Help, I am so lost! Thanks in advance!! Find the x-intercepts. y = x^2 – 4x + 4       Log On


   

Question 22247: Help, I am so lost! Thanks in advance!!
Find the x-intercepts.
y = x^2 – 4x + 4
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
To find the x-intercepts, set y = 0 and solve for x.
x%5E2+-+4x+%2B+4+=+0 Solve by factoring.
%28x+-+2%29%28x+-+2%29+=+0 Apply the zero product principle.
%28x+-+2%29+=+0 You will have a double root.
If x+-+2+=+0 then, x+=+2 A double root.
See the graph:
graph%28300%2C200%2C-5%2C5%2C-5%2C5%2Cx%5E2-4x%2B4%29