SOLUTION: i need to factor out completely 7x^2-30x+8 and say if its factorable or not factorable...could you solve it step by step .. please is it 7x^2-28x-2x+8=0

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Question 650831: i need to factor out completely 7x^2-30x+8 and say if its factorable or not factorable...could you solve it step by step .. please
is it 7x^2-28x-2x+8=0
Answer by ewatrrr(24785)   (Show Source): You can put this solution on YOUR website!
 

Hi,

7x^2-30x+8 

factoring using the Grouping Method

 7x^2-28x-2x+8=0

7x(x-4) -2(x-4) = 0

 (7x - 2)(x-4) = 0

 (7x - 2)= 0  x = 2/7

0r (x-4) = 0  x = 4

Checking Factoring Using FOIL

F	First terms

O	Outside terms -28x

I	Inside terms   -2x

L	Last terms

 

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