leamc2234
leamc2234
11-08-2017
Mathematics
contestada
Find the product mentally. (ab + 3)(ab - 3)
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foreveryoungblood
foreveryoungblood
11-08-2017
Use the FOIL method
a^2b^2 - 9
Answer Link
Аноним
Аноним
11-08-2017
This is a difference if squares.
Multiply the terms in the parenthesis with the respective equal one.
I mean: ab*ab and +3*(-3)
a^2b^2 - 9
Answer Link
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