(
X+9)(x-3)(x-7)(x+5)=385
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385 = 5 × 7 ×11 ×1
put x= 1 ... not satisfied
put x=2 ...
(2+9)(2-3)(2-7)(2+5) = (11)(-1)(-5)(7) =385
x= 2 is our answer
put x= 1 ... not satisfied
put x=2 ...
(2+9)(2-3)(2-7)(2+5) = (11)(-1)(-5)(7) =385
x= 2 is our answer
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