Question

If X + 9 is factor of x cube + 13 x square + 31 X - 45 find other two factors

Answer 1

x+9 se x^3+13x^2+31x-45. ko divide karne per x^2+4x-5. aayega


again. x^2+4x-5=0
::. x^2+5x-x-5=0

x(x+5)-1(x+5)=0

(x+5)(x-1)=0

x= -5 , 1

is your answer