SOLUTION: 11. Multiply. (5p + 4)(5p - 4)
-> SOLUTION: 11. Multiply. (5p + 4)(5p - 4)
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Algebra: Inequalities, trichotomy
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(5p + 4)(5p - 4)
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(5p + 4)(5p - 4) = 25p^2 - 20p + 20p - 16
= 25p^2 - 16
Or we can note that this resembles the difference of two squares form, and we can come up to the answer right away without multiplying it out.