Question

The factories of expression 9x2-49 is​

Answer 1

Answer:

(3x + 7)(3x - 7) is the answer

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

$9 {x}^{2} - 49 \\ = {(3x)}^{2} - {7}^{2} \\ = (3x - 7) \times (3x + 7)$