SOLUTION: 81r^4-256s^4
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Question 90059
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81r^4-256s^4
Answer by
checkley75(3666)
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81r^4-256s^4
(9r^2+16s^2)(9r^2-16s^2)
(9r^2+16s^2)(3r+4s)(3r-4s)
(