Question

factorise:7bsquare-8b plus one​

Answer 1

Answer:

7b^2-8b+1

=7b^2-7b-b+1

=7b(b-1) -1(b-1)

=(7b-1) (b-1)

Answer 2

Answer:

b=1/7 or b=1

Step-by-step explanation:

7b²-8b+1=0

7b²-7b-1b+1=0

7b(b-1)-1(b-1)=0

(7b-1)(b-1)=0

7b-1=0 or b-1=0

7b=1 or b=1

b=1/7 or b=1