FOIL Method
F
(x)(2x)=2x^2
O
(x)(-1)=-x
I
(4)(2x)=8x
L
(4)(-1)=-4
ANSWER:
2x^2+7x-4
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FOIL Method
F
(x)(2x)=2x^2
O
(x)(-1)=-x
I
(4)(2x)=8x
L
(4)(-1)=-4
ANSWER:
2x^2+7x-4