SOLUTION: Find the x-intercepts. y = x2 – 4x + 4

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Question 123950: Find the x-intercepts. y = x2 – 4x + 4
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
To find the x-intercepts, set y equal to zero


x%5E2-4x%2B4=0

%28x-2%29%28x-2%29=0 Factor the left side (note: if you need help with factoring, check out this solver)



Now set each factor equal to zero:
x-2=0 or x-2=0

x=2 or x=2 Now solve for x in each case


Since we have a repeating answer, our only answer is x=2

Notice if we graph y=x%5E2-4x%2B4 we can see that the only root is x=2. So this visually verifies our answer.


+graph%28500%2C500%2C-10%2C10%2C-10%2C10%2C0%2C+x%5E2-4x%2B4%29+