Question

What number must be subtracted from
7x3- 5x2- 3x -1, so that x - 1 is one of its
factors?​

Answer 1

Answer:

-7

Step-by-step explanation:

21-10-3x-1

=21-10-3x-1

=10-3x

we have to subtract -7

=10-3x-7

=3-3x

= -3(x-1)