Question

9 bracket open x - 2y bracket close whole square - 4 bracket open x - 2y bracket close - 13

Answer 1

9 ( x - 2y )^2 - 4 ( x - 2y ) - 13

let x - 2y be t.

9t^2 - 4t - 13

= 9t^2 - 13t + 9t - 13

= t ( 9t - 13 ) + 1 ( 9t - 13 )

= ( t + 1 ) ( 9t - 13 )

= ( x - 2y + 1 ) ( 9( x - 2y ) - 13)

=(x - 2y + 1 ) ( 9x - 18 y - 13 )..ans

Answer 2

9(x-2y)-4(x-2y)-13
9x-18y-4x+8y-13
5x-10y-13