Question

factorise=x^2-9y^2+6y-1​

Answer 1

Answer:

x²-9y²+6y-1

x²-(9y²-6y+1)

x²-[(3y)²-2(3y)(1)+(1)²]

using a²-2ab+b²=(a-b)²

x²-(3y-1)²

using a²-b²=(a+b)(a-b)

[x-(3y-1)][x+(3y-1)]

(x-3y+1)(x+3y-1)