Since is a factor,
so
Thus
By comparison,
Hence,
Anyway, you can get the two factors by the method Cross Multiplication for the quadratic expression, that will be faster.
Hello s2951I'm not sure where you get the term in the line that I've indicated. When you divide by , the result is simply .
If I may expand on acc100jt's solution a little:
If , then when we multiply out the RHS we get:
So, when we compare coefficients:
the coefficient ofand
the constant term:Check with the coefficient of :
, which is correctSo the other factor is
Grandad