B ELLWORK Factor each of the following: 1.x 2 + 4x + 4 2.x 2 + 12x + 27 3.6x 2 + 23x + 21 (yes it works :) ) 4.x 2 + x - 42.

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Presentation transcript:

B ELLWORK Factor each of the following: 1.x 2 + 4x x x x x + 21 (yes it works :) ) 4.x 2 + x - 42

H OMEWORK A NSWERS

10.2 S OLVING Q UADRATIC E QUATIONS BY G RAPHING Algebra 1

Q UADRATIC E QUATION Quadratic Equation related to the quadratic function, in that it has the same form, with the exception of y being replaced with a 0 Roots the solution of a quadratic equation Zeros the x-intercepts of a quadratic equation (this is what is used to find the roots)

E XAMPLES 1. Solve x 2 - 3x - 10 = 0 by graphing.

E XAMPLES 2.Solve x 2 - 6x = - 9

E XAMPLES 3.Solve x 2 + 2x + 3 = 0

E XAMPLES 4.Solve x 2 +4x = - 4

10.2 S TUDY G UIDE AND I NTERVENTION