Question

ab^2+(a-1)b-1.
plzz explain briefly...​

Answer 1

Step-by-step explanation:

=ab² + (a-1)b-1 =0

=ab² + ab -b -1 = 0

=ab² -b +ab -1 =0

=b ( ab -1) +1(ab-1) =0

=(ab-1) (b+1) =0

=>b= -1 , a = -1