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xKeko
xKeko xKeko
  • 05-05-2016
  • Mathematics
Answered

expand: (b + 2)(b - 4)

Verified Answer :

Ashleymackenzie2015
Ashleymackenzie2015 Ashleymackenzie2015
  • 05-05-2016

i believe the answer is b^2-2b-8

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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

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