x squared minus two x minus sixty three

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1 Answer

X^2 - 2x - 63 =(x - 9 )( x+ 7)                                 - 63 = -9*7

                                                                             - 9 = 7 = - 2

     X - 9 = 0 or x + 7 = 0

x = 9 or x = - 7    

                   

                                   

by Level 8 User (36.8k points)

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