Question

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

find the product using identities
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Answer 1

$(x - 3)( x + 3)( {x}^{2} + 9)$

(a-b) (a+b)= a^2-b^2

$( {x}^{2} - 9)( {x}^{2} + 9)$

(a-b) (a+b)= a^2-b^2

$( {x}^{4} - 81)$

So this is your answer.

Answer 2

Answer:x^4 - 81

Step-by-step explanation:

(x^2-9) (x^2+9)

(x^4-81)