SOLUTION: multiply the following 4x(2x^2+x-1) should I use foil?

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Question 73303: multiply the following
4x(2x^2+x-1)
should I use foil?

Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
FOIL APPLIES TO TWO TWO TERM FACTORS (A+B)(2A-2B)
WHAT YOU HAVE 4X(2X^2+X-1) REQUIRES MULTIPLYING ALL TERM WITH THE () BY 4X. THUS:
8X^3+4X^2-4X IS YOUR EXPANDED ANSWER.