Question

if x-1 is a factor of 2x²-x-1, then find the other factor​

Answer 1

Answer:

2x^2-x-1

=2x^2-2x+x-1

=2x(x-1)+1(x-1)

=(x-1)(2x+1)

so, if (x-1) is a factor then other factor is (2x+1)