edjiejwi
edjiejwi
28-03-2018
Mathematics
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(ab - 9)(ab + 8) Please help
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Аноним
Аноним
28-03-2018
Use FOIL. :)
(ab - 9)(ab + 8)
ab^2 + 8ab - 9ab + 72
Simplify:
ab^2 - ab - 72
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DeathTheKid101
DeathTheKid101
28-03-2018
a^2 b^2 + 8ab - 9ab - 72
a^2 b^2 + (8ab - 9ab) - 72
[tex] a^{2} [/tex] [tex] b^{2} [/tex] - ab - 72
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