Question

8(a-2b)²-2a+4b-1
thank you​

Answer 1

8(a-2b)²-2a+4b-1

8(a-2b)²-2(a-2b)-1

let (a-2b) = x

so eqn becomes

8x^2 - 2x -1

8x^2 - ( 4-2)x - 1

8x^2 -4x+2x-1

4x(2x-1)+1(2x-1)

(4x+1)(2x-1)

{4(a-2b)+1}{2(a-2b)-1}

{4a-8b+1}{2a-4b-1}