Question

please help me to solve this fasy ​

Answer 1

Answer:

$(8x + 9y)(8x - 9y)$

Step-by-step explanation:

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

According to the formula,

${x}^{2} - {y}^{2} = (x + y)( x - y) \\ = (8x + 9y)(8x - 9y)$

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