xKeko
xKeko
05-05-2016
Mathematics
contestada
expand: (b + 2)(b - 4)
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Ashleymackenzie2015
Ashleymackenzie2015
05-05-2016
i believe the answer is b^2-2b-8
Answer Link
Kindlyevil
Kindlyevil
05-05-2016
(b+2)(b-4)
b x b = b^2
b x 2 = 2b
b x -4= -4b
2 x -4=-8
b^2+2b-4b-8= b^2-2b-8
Answer Link
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