Special Problems (Solve)

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Presentation transcript:

Special Problems (Solve) 1.) x2 - 4 = 0 2.) 4x2 - 9 = 0 3.) x2 - 25 = 0 4.) 9x2 - 100 = 0 The difference of 2 perfect squares

Special Problems (Solve) 1.) x2 - 4 = 0 (x - 2)(x + 2) = 0 x - 2 = 0 & x + 2 = 0 x = 2 & x = -2

Special Problems (Solve) 2.) 4x2 - 9 = 0 (2x - 3)(2x + 3) = 0 2x - 3 = 0 & 2x + 3 = 0 2x = 3 & 2x = -3 x = 3/2 & x = -3/2

Special Problems (Solve) 3.) x2 - 25 = 0 4.) 9x2 - 100 = 0 Your Turn

Special Problems (Solve) 3.) x2 - 25 = 0 (x - 5)(x + 5) = 0 x - 5 = 0 & x + 5 = 0 x = 5 & x = -5

Special Problems (Solve) 4.) 9x2 - 100 = 0 (3x - 10)(3x + 10) = 0 3x - 10 = 0 & 3x + 10 = 0 3x = 10 & 3x = -10 x = 10/3 & x = -10/3

Classwork Do Pg. 176 # 7 – 49 First Column