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OpenStudy (anonymous):
Multiply and simplify: (4t - 9)2 A.16+^2-72+81 b. 16^2+81
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OpenStudy (bibby):
if you use the FOIL method (4t-9)(4t-9) first = 16t^2 outer=-36t inner=-36t last=+81 \[16t^{2}-72t+81\]
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