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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.
The one that CPhill answered (srry CPhill) was wrong because the last three were incorrect. 

 May 24, 2020
 #1
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the two numbers in    (7x  + a     )(x  + b  )      must multiply together to -11

 

ab = -11       then     a,b    =   -11,1     11,-1    -1,11   1,-11

 

if you put all of those into the red equation above you will find   n = -4     4      76    -76           I believe.......

 May 24, 2020

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