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Mathematics 15 Online
OpenStudy (anonymous):

49-25x^2

OpenStudy (solomonzelman):

25x² = (5x)² Then use a²-b²=(a-b)(a+b)

OpenStudy (solomonzelman):

your ` a ` is `5x` your ` b ` is `7`

OpenStudy (solomonzelman):

Let me know if you need more help.

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