highkeyyss123 highkeyyss123

21-11-2019
Mathematics

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how do you work out (7x+3)(7x-3)

Respuesta :

21-11-2019

We can solve this using the FOIL method.

= (7x + 3)(7x - 3)

= (7x * 7x) + (7x * -3) + (3 * 7x) + (3 * -3)

= 49x - 21x + 21x - 9

= 49x - 9

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