Question

(2x+9)(2x-9) using identity

Answer 1

Answer:

2x^2 -9^2

4x^2 - 81

Step-by-step explanation:

using (a-b) (a+b)

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Answer 2

Step-by-step explanation:

${2x}^{2} - {9}^{2}$

$4 {x}^{2} - 81$

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