Question

find the values of m and n if the polynomial 2x^3 + mx^2 + nx - 14 has x - 1 and x + 2 as it's factors

Answer 1

If x-1 is the factor then x=1
Then,
2*(1)+m*(1)+n(1)-14=0
2*m+n=14
M+n=7
And if x+2 as a factor then