Question

factorise 64x sq. - 81​

Answer 1

Answer:

(8x-9)(8x+9)

Step-by-step explanation:

64$x^{2}$-81= (8x-9)(8x+9)

Answer 2

Answer:

$64 {x}^{2} - 81 \\ ({8x})^{2} - {9}^{2} \\ (8x - 9)(8x + 9)$

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