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

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To find the x-intercepts, set y equal to zero




Factor the left side (note: if you need help with factoring, check out this solver)



Now set each factor equal to zero:
or

or Now solve for x in each case


Since we have a repeating answer, our only answer is

Notice if we graph we can see that the only root is . So this visually verifies our answer.