How do you foil (9x + 9)(3x + 3) (9x+9)(3x+3)?

1 Answer
Alan P.
Aug 24, 2015

(9x+9)(3x+3)=(27x^2+54x+27)(9x+9)(3x+3)=(27x2+54x+27)

Explanation:

FOIL:
Sum of
color(white)("XXX")XXXproduct of First terms, plus
color(white)("XXX")XXXproduct of Outside terms, plus
color(white)("XXX")XXXproduct of Inside terms, plus
color(white)("XXX")XXXproduct of Last terms

{: ("product of First terms", 9x*3x=, 27x^2), ("product of Outside terms",9x*3=,27x), ("product of Inside terms", 9*3x =, 27x), ("product of Last terms", 9*3=,27), (, ,), ("Sum", ,27x^2+54x+27) :}

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