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Study23Best ResponseYou've already chosen the best response.2
Well, the outer terms have to equal 12. The inner terms have to add to equal 9. What options do you have?
 one year ago

shannonaaaBest ResponseYou've already chosen the best response.0
A. (x + 1)(x  12) B. (x + 2)(x + 6) C. (x  2)(x  6) D. prime
 one year ago

Study23Best ResponseYou've already chosen the best response.2
It's prime. None of the other options produce 9x when the inside and outside terms are added together.... Does that make sense to you?
 one year ago

UnkleRhaukusBest ResponseYou've already chosen the best response.0
\[(x + 1)(x  12)=x^211x12\neq x^2  9x + 12\] \[(x + 2)(x + 6)=x^2+8x+12\neq x^2  9x + 12\] \[(x  2)(x  6)=x^28x+12\neq x^2  9x + 12\]
 one year ago

Nancy_LamBest ResponseYou've already chosen the best response.0
\[x=\frac{b^2\pm \sqrt{b^24ac}}{2a}\]a=1, b= 9 , c=12
 one year ago
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