Question

Prove that x-1 is a factor of x³-7x²+13x-7

Answer 1

here X-1 is factor

so,x=1

p(x)= x³-7x²+13x-7

p(1)= (1)³-7(1)²+13(1)-7

= 1-7+13-7

=13+1-7-7

=14-14=0

HENCE PROVED