Question

Without actual division prove that (x+1) is a factor of 2x³ +x² -2x-1 is factorise completely​

Answer 1

Step-by-step explanation:

2x^3+x^2-2x-1

x= -1

2× (-1)^3 +(-1)^2 -2×(-1) -1

2× (-1) +1+2-1

-2+1+2-1

= 0