## Third midterm

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In 1 and 2, simplify.

1.

2.

In 3 - 5, solve for *x* and check.

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3.

4.

*x*^{2} - 6*x* + 5 = 0
5.

2*x*^{2} - 6*x* - 7 = 0
6. Graph

*y* = *x*^{2} - 2*x* - 3
Find a) the *y*-intercept,

b) the roots, and

c) the coordinates of the vertex.

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