Question

x3-x2+7,-9x+10x2-6,2x-3x2-5

plz give full explanation​

Answer 1

Answer:

x3−3x2−9x−5=0⟶(1)

Putting x=−1 in (1), the equation satisfies the condition 

(x+1) is the factor of the equation 

hence, (x+1)(x2−4x−5)=0⇒(x+1)(x+1)(x−5)=0⇒x=−1;−1;5