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Mathematics 8 Online
OpenStudy (anonymous):

54-15a-a^2

geerky42 (geerky42):

\[a^2 - 15a + 54 \neq 54 - 15a - a^2\]

geerky42 (geerky42):

54-15a-a² = (18 + a)(3 - a) a = -18, 3

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