SOLUTION: Find the x-intercepts of the graph of the equations: y = x^2 - 3x + 2 y = x^2 - 1

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Question 389613: Find the x-intercepts of the graph of the equations:
y = x^2 - 3x + 2

y = x^2 - 1
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!


Hi,         

x-intercepts are dtyermined when y = 0

 x^2 - 3x + 2 = 0

factoring

(x-2)(x-1) = 0 Note:SUM of the inner product(-2x) and the outer product(-x) = -3x

(x-2)= 0    x = 2  x -Intercept Pt(2,0)

(x-1) = 0   x = 1  x -Intercept Pt(1,0)





 x^2-1 = 0

    x^2 = 1

    x = ± 1        x -Intercepts: Pt(1,0)and Pt(-1,1)