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Find all integers n such that the quadratic 7x^2 + nx - 11 can be expressed as the product of two linear factors with integer coefficients.

 Oct 7, 2020
 #1
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Factors of    -11     are    1   -11     and     -1  11

 

(7x+1)(x-11)

(7x-1)(x+11)

(7x-11)(x+1)

(7x+11)(x-1)           n can then be      -76   76   -4   +4     

 Oct 7, 2020

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