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fml2 fml2
  • 15-01-2017
  • Mathematics
Answered

factor 5b^2 + 8b - 4

factor 5b 2 + 8b - 4 class=

Verified Answer :

bobduncan063 bobduncan063
  • 16-01-2017

Product=-20
Sum=8

Two factors are -2 and 10

=(5b^2-2b)+(10b-4)
=b(5b-2)+2(5b-2)
=(b+2)(5b-2)

Final answer is (b+2)(5b-2)

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