SOLUTION: for all x
36x4-8x3-28x2=
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Question 324828: for all x
36x4-8x3-28x2=
Answer by checkley77(12844) (Show Source): You can put this solution on YOUR website!
36x^4-8x^3-28x^2=0
4x^2(9x^2-2x-7)=0
4x^2(9x+7)(x-1)=0
4x^2=0
x=0 ans.
8x+7=0
9x=-7
x=-7/9 ans.
x-1=0
x=1 ans.
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