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(z+4)(z+3) Please Help!

(z+4)(z+3) Please Help!-example-1
User Mielle
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The answer is z²+7z+12
Just use FOIL.
User Crow
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The pencil work in your workbook is correct,
EXCEPT for the very last number ...

The last number is (4 x 3). That's '12', not '7'.
User Tony Maro
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