Question

factorize by using algebraic identities 9-81x^2

Answer 1

Step-by-step explanation:

9-81x²

(3)²-(9x)²

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

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Answer 2

$\huge \boxed {\rm9 - {81x}^{2} }\\ = > \boxed {\rm {(3)}^{2} - {(9x)}^{2} } \\ = > \boxed {\rm(3 + 9x)(3 - 9x)} \\ = > \boxed {\sf3 \{ (1 - 3x)(1 + 3x)\}}$