SOLUTION: Find the x-intercepts of the graph of the equations. y=x^2-1 y=x^2-2x+35 y=x^2-3x+2

SOLUTION: Find the x-intercepts of the graph of the equations. y=x^2-1 y=x^2-2x+35 y=x^2-3x+2

Algebra.Com

Question 438128: Find the x-intercepts of the graph of the equations.
y=x^2-1
y=x^2-2x+35
y=x^2-3x+2

Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
Replace each y by 0, and solve for the corresponding x-values.
==> ==> x-intercepts are -1, 1
The discriminant 4-4*1*35 = 4 - 140 = -136 < 0 ==> there are no x-intercepts for the second function.
For the third, (x - 1)(x - 2) = 0 ==> x-intercepts are 1,2

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