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Solve x2 – 4 = 0. x2 – 4 = 0 (x + 2)(x – 2) = 0 x + 2 = 0 or x – 2 = 0 x = –2 or x = 2 The solution is x = + 2 or -2
Quadratics
Solve x2 – 3x – 4 = 0. x2 – 3x – 4 = 0 (x + 1)(x – 4) = 0 x + 1 = 0 or x – 4 = 0 x = –1 or x = 4 The solution is x = –1, 4
Solve x2 – 7x = 0. x2 – 7x = 0 x(x – 7) = 0 x = 0 or x – 7 = 0 x = 0 or x = 7 The solution is x = 0, 7
Vocabulary 1. trinomials : Consisting of three terms 2.Parabolas: a conic section generated by the intersection of a right circular conical surface and a plane parallel to a generating straight line of that surface. 3. Radicals: The symbol used to indicate the nth root of a number 4. Perfect squares : A number with the exact same multipul to get the answer number. 5. Greatest common factor (GCF): The largest factor that 2 or more numbers have in common.
