+4 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.
+36916 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.......
