factorise:7bsquare-8b plus one
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Answer:
7b^2-8b+1
=7b^2-7b-b+1
=7b(b-1) -1(b-1)
=(7b-1) (b-1)
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