Question

use a suitable identity to get each of the following product i) ( x+3)(x-3)
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Answer 1

Answer:

(x+3) (x-3)

x+3x-3

4x-3

Answer 2

(x+3)(x+3) = (x+3)²

= (x)²+2 X x X 3 +(3)² [Using identity (a+b)² =a²+2ab+b²]

= x²+6x+9

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