SOLUTION: -c^4 - c^3 + 56c^2

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Question 299118: -c^4 - c^3 + 56c^2
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
-c^4 - c^3 + 56c^2
-c^2(c^2+c-56)=0
-c^2(c+8)(c-7)=0
c+8=0
c=-8 ans.
c-7=0
c=7 ans.