Answered

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What is (x+3)(x-3) in standard form ?

Sagot :

Answer:

x² - 9

Step-by-step explanation:

   (x + 3)(x - 3)

= x(x - 3) + 3(x - 3)     Distributive  property

= x² - 3x + 3x - 9

= x² +( -3x + 3x) - 9       Associative

= x² + 0x - 9                   Addition    

= x² - 9                        

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