Question

factorise (За — 1)²— ба + 2​

Answer 1

Answer:

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Step-by-step explanation:

factorise (За — 1)²— ба + 2

(За — 1)²— ба + 2

=> 9a²+1-6a-6a+2

=> 9a²-12a+3

=> 9a²- 9a-3a+3

=> 9a ( a-1)-3 (a-1)

=> (9a-3) ( a-1)

=> (9a-3) =0 or a-1

=> a = 1/3 or a = 1